19 Best Mailgun Alternatives

Our Pick for SaaS Companies

4.8avg rating

Sequenzy

SaaS-focusedAI-poweredMarketing + Transactional

Marketing + transactional for SaaS with AI content generation. Unlike Mailgun, includes visual email builders, automation, and Stripe integration.

One platform for all emails. Sequenzy's AI can generate entire email sequences from a short description, which is a world apart from Mailgun's API-only approach with no content tools. Pricing starts at $49/month for 120,000 emails, unlimited subscribers with everything included—no per-email overage charges to worry about. Best for SaaS teams who want to stop juggling Mailgun for transactional and a separate tool for marketing campaigns.

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Best for

SaaS teams wanting marketing + transactional together

Pricing

$49/month for 120k emails (unlimited subscribers)

Pros

Marketing + transactional in one platform
Visual drag-and-drop email builder
AI generates entire email sequences
Native Stripe integration
Subscriber-based pricing (predictable)

Cons

No inbound email parsing
No email validation API
Newer platform
No SMTP relay support

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4.7avg rating

Resend

Developer-firstReact EmailTransactional only

Modern developer experience with beautiful APIs and React Email integration. What Mailgun would be if built today.

Transactional only. Resend's SDKs are genuinely a joy to use—clean type-safe libraries for every major language, with React Email letting you build templates as React components. The free tier gives you 3,000 emails/month to test with, and paid plans start at $20/month for 50,000 emails. The tradeoff is clear: no SMTP relay, no inbound parsing, no marketing features—but if you only need transactional email with the best possible developer experience, nothing touches Resend right now.

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Best for

Developers prioritizing DX for transactional

Pricing

$20/month for 50,000 emails

Pros

Best developer experience in email
React Email integration
Modern SDKs for every language
Clean, intuitive API
3,000 emails/month free

Cons

Transactional only (no marketing)
No SMTP relay
Newer (less proven at massive scale)
No email validation

What users say

View source reviews

Mantas Vileisis · Trustpilot

“They suspended account when we were getting a lot of new customers/traffic. We lost tons of them because of Resend. They decided to suspend our account, and after a long wait they decided to keep the ban!”

Zeniki Beniki · Trustpilot

“Just implemented this service to my client's website. Super easy to implement, all verifications went smooth and quick. Emails come to Gmail next second. Very happy so far!”

4.8avg rating

Postmark

Best deliverabilityTransactional onlyHuman support

Exceptional deliverability because they reject bad actors. If your emails must arrive (password resets, 2FA), Postmark's strict policies pay off.

Postmark actively vets customers and will turn away anyone sending questionable content, which keeps their shared IP reputation pristine. At $15/month for 10,000 emails they're competitively priced against Mailgun's new rates, and the API is clean and well-documented. The limitation is the same as Resend: transactional only, no marketing campaigns or automation. But for mission-critical transactional email where delivery speed and inbox placement matter more than anything, Postmark is the industry gold standard.

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Best for

Apps where deliverability is critical

Pricing

$15/month for 10,000 emails

Pros

Best deliverability in the industry
Strict customer vetting
Clean, developer-friendly API
Message streams for organization
Human support on all plans

Cons

Transactional only
Will reject questionable use cases
More expensive at high volume
No marketing features

What users say

View source reviews

Oli Ver · Trustpilot

“We used SendGrid for 6 months and it was a constant headache. Our welcome emails, order confirmations, and password reset emails were either landing in spam or getting blocked. Postmark solved all of that.”

Mateusz Kroplewski · Trustpilot

“I have tried using MailJet and AmazonSES before Postmark and the customer service is very slow. I set up Postmark and got my domain approved to send email on the same day. Customer service is amazing.”

4.2avg rating

Amazon SES

Cheapest at scaleAWS ecosystemFull DIY

The cheapest at scale—$0.10 per 1,000 emails. But zero hand-holding. You're on your own for templates, deliverability, and bounce handling.

At high volume, the cost savings over Mailgun are enormous: 100,000 emails costs $10 on SES versus roughly $200 on Mailgun's Flex plan. The tradeoff is that you get no dashboard, no template editor, no deliverability monitoring, and no bounce management out of the box—you build everything yourself. Best for engineering teams already deep in the AWS ecosystem who have the resources to build their own email infrastructure layer on top of SES. If you don't have dedicated DevOps, look elsewhere.

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Best for

Cost-sensitive high-volume senders with engineering resources

Pricing

$0.10 per 1,000 emails

Pros

Cheapest at high volume by far
AWS reliability
Full control over infrastructure
No monthly minimum
Scales infinitely

Cons

Zero developer experience
DIY everything (templates, bounces)
No dashboard or analytics
AWS complexity and IAM headaches

4.0avg rating

SendGrid

Marketing + TransactionalProven scaleTwilio ecosystem

The obvious comparison—both are Sinch-owned now. SendGrid has marketing features Mailgun lacks, but the DX feels equally dated.

Similar pricing. SendGrid's Essentials plan at $19.95/month for 50,000 emails actually undercuts Mailgun significantly, and you get marketing campaign tools, contact management, and a visual editor on top of the transactional API. The developer experience isn't modern by any means, but the documentation is solid and it handles massive scale reliably. The elephant in the room: both are owned by Sinch, so switching from Mailgun to SendGrid keeps you under the same corporate umbrella. If acquisition concerns are driving your switch, this doesn't solve that problem.

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Best for

Teams wanting marketing + transactional from same vendor

Pricing

$19.95/month for 50,000 emails (Essentials)

Pros

Marketing + transactional combined
Proven at massive scale
Part of Twilio ecosystem
Good documentation
Both API and SMTP supported

Cons

DX feels dated
Deliverability varies on shared IPs
Complex pricing tiers
Now owned by same company as Mailgun
Support quality depends on tier

What users say

View source reviews

Steve Yardumian · Trustpilot

“Awful experience. Customer support is non-existent. What little support does exist covers for development's shortcomings. Missing all kinds of data points in many API endpoints. Don't waste your time.”

Nicolas Arden · Trustpilot

“Terrible company with zero customer support. Frequently loses account data, unable to remove my debit card from the platform, and they keep trying to charge me despite me not using the service.”

3.5avg rating

SparkPost

EnterprisePredictive analyticsHigh volume

Enterprise email with predictive analytics. Now part of Bird (MessageBird). Good for high volume with deliverability insights.

SparkPost's predictive analytics can forecast deliverability issues before they happen, and their real-time bounce classification is more granular than what Mailgun offers. Plans start at $20/month for 15,000 emails, scaling to enterprise volumes with dedicated support. The concern is the Bird acquisition—like Mailgun with Sinch, SparkPost's direction is now tied to a larger company's strategy. Best suited for enterprise teams sending millions of emails who need deep deliverability intelligence, not small startups looking for a simple API.

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Best for

Enterprise high-volume senders

Pricing

$20/month for 15,000 emails

Pros

Predictive email analytics
Handles enterprise scale
Strong deliverability tools
Email validation included
Real-time bounce classification

Cons

Enterprise-focused pricing
Not for small teams
Owned by Bird (acquisition concerns)
DX not modern
Uncertain product roadmap

What users say

View source reviews

Rohit Joshi · Trustpilot

“If I could give 0 stars, I would. My account has been blocked for over a week due to a billing error caused by SparkPost, and they still haven't fixed it. No urgency, no ownership.”

Steven Bull · Trustpilot

“Developers beware, they will suspend your account based on 'suspicion' with no communication. They broke the emails in our production environment. We have been in business for over 30 years.”

4.1avg rating

Brevo

Budget-friendlyUnlimited contactsAll-in-one

Budget-friendly with unlimited contacts. Includes transactional, marketing, and SMS.

Not the prettiest but capable and affordable. Brevo's unlimited contacts model means you pay $25/month regardless of list size—you only pay more when you send more emails. This makes it significantly cheaper than Mailgun for teams with large contact databases and moderate sending frequency. The platform also includes SMTP relay, which Mailgun users will appreciate for legacy system compatibility. The downsides are a dated interface and occasionally slow support, but for teams who need transactional, marketing, and SMS in one affordable package, Brevo delivers solid value without the premium price tag.

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Best for

Budget-conscious teams wanting all-in-one

Pricing

$25/mo for unlimited contacts (20k emails)

Pros

Unlimited contacts on all plans
Transactional + marketing + SMS
SMTP and API access
Actually affordable at scale
No per-email surprise bills

Cons

Interface is dated
Pay-per-email adds up at high volume
Support can be slow
Less developer-focused than Mailgun

What users say

View source reviews

Gary Curran · Trustpilot

“Disappointing experience with Brevo. Our account was initially suspended after a first campaign due to bounce rate. We followed the required self-service steps and successfully revalidated the account ourselves. After this, support took ages to respond.”

Larry Chin · Trustpilot

“Brevo is a solid service for handling your marketing emails and much more. The tech support is fast and good. Making a marketing email is fast and easy. I have used SendinBlue, now Brevo, for many years now.”

4.6avg rating

Customer.io

PLG-focusedMulti-channelBehavioral triggers

The powerhouse for PLG companies. Email, push, SMS, in-app—with sophisticated behavioral triggers.

Expensive but nothing matches its power. Customer.io lets you build automation workflows triggered by any user behavior—page views, feature usage, billing events—across email, push notifications, SMS, and in-app messages simultaneously. The API is excellent and the event-based architecture will feel natural to teams used to Mailgun's developer-oriented approach. At $100/month for just 5,000 profiles, it's 3-4x the cost of Mailgun, and the setup complexity is significant. Best for product-led growth companies with complex user journeys who've outgrown simple transactional email and need sophisticated multi-channel behavioral messaging.

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Best for

PLG companies with complex user journeys

Pricing

$100/month for 5,000 profiles (Essentials)

Pros

Most powerful behavioral automation
Multi-channel (email, push, SMS, in-app)
Transactional included
Excellent API for developers
Built for product-led growth

Cons

3-4x Mailgun's price
Complex setup required
Steep learning curve
Overkill for simple transactional needs

What users say

View source reviews

Sarit Rosenthal Aviram · Trustpilot

“Renewal terms were changed without a proper notification! They tried a sneaky way to add conditions to the renewal contract, and increased their pricing. They are not flexible at all on those terms even though we are their customers for many years.”

Good Comfort · Trustpilot

“After months of trying to make Customer.io work for our business, I can say with confidence: unless you have a dedicated engineering team and endless patience, look elsewhere.”

4.5avg rating

Loops

SaaS-focusedModern UITransactional included

Modern SaaS email platform with transactional included. Clean interface, good deliverability.

Specifically built for software companies. Loops combines marketing campaigns and transactional email in a single platform with a genuinely clean UI that makes Mailgun's dashboard feel ancient. Every plan includes all features—no gating behind tiers—which is refreshing. At $49/month for 5,000 subscribers (roughly $99 for 10k), it's pricier than Mailgun for pure transactional but you get full marketing capabilities included. The main gaps: no AI content generation, no SMTP relay for legacy systems, and as a newer platform it doesn't yet match Mailgun's scale track record. Ideal for SaaS teams who want a modern, opinionated email platform without the complexity of Customer.io.

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Best for

SaaS teams wanting modern email

Pricing

$49/mo for 5k, ~$99/mo for 10k subscribers

Pros

Built for SaaS from day one
Transactional + marketing together
Clean, modern interface
Good deliverability
All features on all plans

Cons

Gets expensive past 10k
No AI content generation
No SMTP relay
Newer platform with less track record

#10

4.0avg rating

Mailjet

CollaborationGDPR compliantMarketing + Transactional

Mid-tier option from Sinch (same parent as Mailgun). Offers marketing + transactional with real-time collaboration.

Good middle ground. Mailjet's standout feature is real-time email collaboration—multiple team members can edit the same email template simultaneously, which is useful for marketing teams. At $15/month for 15,000 emails, the pricing is competitive with Mailgun's post-increase rates. It supports both SMTP relay and API access, so migration from Mailgun is relatively painless. The same caveat as SendGrid applies: Sinch owns both Mailgun and Mailjet, so if corporate consolidation is your concern, this doesn't help. Best for marketing teams who need collaboration features alongside transactional capabilities.

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Best for

Teams wanting collaboration on email

Pricing

$15/month for 15,000 emails

Pros

Real-time email collaboration
Transactional + marketing combined
SMTP and API access
Good template editor
Affordable pricing

Cons

Same parent company as Mailgun
Less powerful automation
Not as developer-focused
Support varies by tier

What users say

View source reviews

Davide · Trustpilot

“Mihael has been extremely patient, knowledgeable, and flexible throughout the entire process. We've received excellent support and truly appreciated the clear and consistent communication.”

Teresa Nelson · Trustpilot

“Nice services, deliverability 100%. But the most important - every question and every request is processed extremely quickly.”

#11

3.8avg rating

Elastic Email

BudgetHigh volumeEmail verification

Very budget-friendly API with decent features. Similar to Mailgun but more affordable at volume.

Good for cost-conscious high-volume. Elastic Email offers both transactional and marketing email at $25/month for 25,000 emails, which significantly undercuts Mailgun's post-increase pricing. They also include email verification, which Mailgun charges extra for on lower plans. The developer experience is basic compared to Resend or Postmark—the API works but feels utilitarian rather than polished. Deliverability and support are acceptable but not exceptional. A pragmatic choice for cost-sensitive teams sending high volumes who don't need premium DX or best-in-class deliverability guarantees.

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Best for

Cost-conscious teams with volume needs

Pricing

$25/month for 25,000 emails

Pros

Very affordable pricing
Both transactional and marketing
Email verification included
Good for high volume
API and SMTP access

Cons

Developer experience is basic
Not as reliable as premium options
Support can be slow
Fewer modern features

#12

4.3avg rating

Plunk

Open-sourceSelf-hostedModern API

Open-source email platform. Self-host for full control or use their managed service.

Good if you want Resend's approach but open-source. Plunk gives you modern API design similar to Resend but with the option to self-host for complete control over your email infrastructure and data. The managed service offers a free tier, making it easy to evaluate before committing. For teams that want the clean DX of a modern email API but need the transparency and control of open-source, Plunk is the only real option in this space. The tradeoffs are typical of early-stage open-source projects: smaller community, fewer integrations, and less proven at scale than established players like Mailgun or Postmark.

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Best for

Developers wanting open-source or self-hosted

Pricing

Free (open-source) or hosted plans

Pros

Open-source and self-hostable
Modern developer experience
Free tier available
Full control if self-hosted
Modern API design

Cons

Early stage (less proven)
Smaller community
Self-hosting requires work
Fewer integrations than Mailgun

#13

4.4avg rating

MailerSend

TransactionalMailerLite teamGood DX

Transactional email from the MailerLite team. Clean API, good deliverability, and email verification included on paid plans.

MailerSend benefits from MailerLite's decade of email infrastructure experience, providing a polished API with proper SDKs, delivery analytics, and inbound email parsing—features that match many of Mailgun's core capabilities. At $25/month for 50,000 emails with a generous 3,000/month free tier, it undercuts Mailgun's post-increase pricing significantly. The dashboard is well-designed with webhook management and activity tracking that rivals Mailgun's. The main gap is no marketing features (transactional only) and less scale track record than Mailgun at enterprise volumes.

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Best for

Teams wanting clean transactional with good DX

Pricing

$25/month for 50,000 emails

Pros

Clean, modern API design
From trusted MailerLite team
Email verification included
Generous free tier (3,000/month)
Good deliverability

Cons

Transactional only (no marketing)
Less enterprise-proven than Mailgun
Newer platform
No inbound email routing like Mailgun

What users say

View source reviews

Leonardo Messias · Trustpilot

“I've had a great experience using MailerSend. The platform is reliable, easy to use, and delivers exactly what it promises. The interface is clean and intuitive.”

J O Spies · Trustpilot

“I have to say that MailerSend support is exceptional. They ask all the right questions so I simply have to provide the details accordingly. Professional assistance.”

#14

4.5avg rating

SMTP2GO

SMTP relayEasy migrationGood support

SMTP relay specialist with a proper dashboard. If you need SMTP compatibility like Mailgun offers but want better support and simpler pricing, SMTP2GO is the most direct replacement.

Their strength is reliable SMTP relay with detailed delivery reporting, which makes migration from Mailgun almost trivial—swap credentials and you're done. At $10/month for 10,000 emails, the pricing is competitive with Mailgun's Foundation plan. They also offer a REST API for modern integrations. The support team is responsive and knowledgeable about deliverability, which many Mailgun users say has declined since the Sinch acquisition. Limited to transactional/relay use—no marketing automation or campaign tools.

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Best for

Teams needing reliable SMTP relay with support

Pricing

$10/month for 10,000 emails

Pros

Excellent SMTP relay support
Easy migration from Mailgun
Responsive human support
Detailed delivery reporting
Competitive pricing

Cons

No marketing features
Less feature-rich API than Mailgun
Smaller brand recognition
No inbound email parsing

What users say

View source reviews

customer · Trustpilot

“I've used them for about 3 months now and the experience has been great. It's nice to see a dashboard of which emails didn't go through and why. They blend the tech and usability well.”

Nico · Trustpilot

“SMTP2GO is a simple and easy-to-use service that handles basic email needs very efficiently. The support team is responsive and friendly. Highly recommend.”

#15

4.3avg rating

Mailtrap

Email testingTransactionalDeveloper tools

Started as an email testing tool and expanded into production sending. If you already use Mailtrap for staging, extending to production replaces Mailgun while keeping your testing workflow intact.

The unique selling point is the integrated testing-to-production pipeline: sandbox environments for development, then the same dashboard for production sending. At $10/month for 10,000 emails on the sending side, pricing undercuts Mailgun. The API is clean and well-documented with good SDKs. The downside is the sending infrastructure is newer than Mailgun's battle-tested systems, and there are no marketing features. Best for development teams who already use Mailtrap for testing and want to simplify their email stack by using one provider end-to-end.

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Best for

Dev teams wanting testing + production in one tool

Pricing

$10/month for 10,000 emails (sending)

Pros

Integrated testing and production
Clean developer experience
Good API documentation
Competitive pricing
Email sandbox for staging

Cons

Sending infrastructure is newer
No marketing features
Less proven at massive scale than Mailgun
No inbound email parsing

What users say

View source reviews

Hongkonger Momo · Trustpilot

“Mailtrap blocked our ability to send marketing emails. We're a paid customer and the list we use is opt-in. They stated our email list was 'not verified' and considered it 'cold email.'”

Jiri · Trustpilot

“We have been using Mailtrap for 3 months and have very good experience with them. We use SMTP relay, webhooks, sending hundreds of thousands of emails and all works good. Great support too.”

#16

4.5avg rating

ActiveCampaign

AutomationCRM includedMarketing-focused

The automation powerhouse with CRM included. If Mailgun's lack of marketing features pushed you to use two tools, ActiveCampaign replaces both with the most sophisticated visual workflow builder in email.

The automation capabilities are genuinely best-in-class—conditional splits, lead scoring, site tracking, predictive sending—things Mailgun has no concept of. Transactional email is available via their Postmark integration (ActiveCampaign acquired Postmark). At $79/month for 10,000 contacts, it's significantly more expensive than Mailgun, and the learning curve is steep. Best for teams that need serious marketing automation alongside transactional and are willing to invest time in setup. Not for teams who just need an email API.

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Best for

Teams needing powerful marketing automation

Pricing

$79/month for 10,000 contacts

Pros

Best-in-class automation builder
CRM with sales pipeline included
Postmark integration for transactional
Predictive sending optimization
950+ integrations

Cons

Much more expensive than Mailgun
Steep learning curve
Transactional via Postmark (separate add-on)
Overkill if you just need an API
Complex pricing tiers

What users say

View source reviews

Giovanni Pizza · Trustpilot

“I've been using ActiveCampaign for years, but the recent experience has been extremely frustrating. Since early November, a critical bug has been blocking one of our core automations. I opened a ticket immediately, provided all the details, logs, and examples requested — and after that? Weeks of silence and runaround.”

Eric S. · Trustpilot

“ActiveCampaign has a steep learning curve, and I was a little intimidated. But I found all the training videos and support really helpful. I was able to become effective with the platform pretty quickly. I think the capabilities of the platform are awesome once you put in the time to learn the system.”

#17

4.0avg rating

Mandrill

Mailchimp add-onTransactionalTemplate merging

Mailchimp's transactional email add-on. If you already use Mailchimp for marketing, Mandrill lets you handle transactional through the same ecosystem without needing Mailgun separately.

The template merge system is powerful—use Mailchimp's visual editor to design transactional templates, then send via Mandrill's API with dynamic content injection. At $20/month for 25,000 emails as a Mailchimp add-on (requires a Mailchimp subscription), it's competitively priced if you already pay for Mailchimp. The downside is you can't use Mandrill standalone—it requires an active Mailchimp plan, making it expensive if you only need transactional. The API is solid but shows its age compared to Resend or Postmark.

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Best for

Teams already using Mailchimp for marketing

Pricing

$20/month for 25,000 emails (Mailchimp add-on)

Pros

Tight Mailchimp integration
Good template merge system
Reliable deliverability
Shared template design with Mailchimp
Proven at scale

Cons

Requires active Mailchimp subscription
Can't be used standalone
API feels dated
Mailchimp pricing keeps climbing
No standalone dashboard

#18

4.2avg rating

Sendy

Self-hostedOne-time paymentSES-powered

Self-hosted newsletter app that uses Amazon SES for sending. One-time $69 payment, then just SES costs.

If you're tired of Mailgun's recurring fees and have the technical chops to self-host, Sendy gives you a dashboard, subscriber management, and campaign analytics powered by SES's cheap infrastructure. The total cost of ownership is dramatically lower than Mailgun for teams sending consistently high volumes. The catch is you need a PHP server, handle your own security patches, and the UI is functional but dated. Best for technically capable teams who want to escape recurring API costs entirely and are comfortable managing their own email infrastructure. Not a direct Mailgun replacement for transactional API—better for campaigns and newsletters.

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Best for

Technical users wanting to own their email stack

Pricing

$69 one-time + SES costs ($0.10/1k)

Pros

One-time payment (no subscription)
Uses SES for cheapest sending
Subscriber management included
Campaign analytics
Complete data ownership

Cons

Self-hosted (requires server maintenance)
PHP-based and dated UI
Not a transactional API replacement
Solo developer—slower updates
Limited automation

What users say

View source reviews

Tom Carter · Trustpilot

“Saves me a lot of money and works well for me. It requires a little bit of technical knowledge, but if you are good at that, you can't find a cheaper solution for sending marketing campaigns.”

Rachel Smith · Trustpilot

“After using Sendy for more than 10 years, we gave up due to the terrible/nonexistent customer service. Their latest update would not work on our platform.”

#19

4.3avg rating

Mailcoach

Self-hostedLaravelMultiple providers

Self-hosted email platform built with Laravel. Works with any email provider (SES, Postmark, SendGrid, Mailgun itself) for sending, giving you provider independence that Mailgun lock-in doesn't.

Mailcoach's standout feature is provider flexibility—configure multiple sending services and switch between them without changing your application code, which protects you from future price increases or acquisition drama. The Laravel foundation means it's well-architected and extensible for PHP teams. At $199/year for self-hosted or $99/month for cloud, the economics beat Mailgun at moderate volumes. Includes campaign management, automation, and transactional templates. Best for Laravel/PHP teams who want full control and the ability to swap email providers without code changes.

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Best for

Laravel/PHP teams wanting provider independence

Pricing

$199/year self-hosted or $99/mo cloud

Pros

Works with any email provider
Provider-independent architecture
Built on Laravel (extensible)
Campaigns + transactional + automation
Self-hosted option for full control

Cons

PHP/Laravel knowledge required
Self-hosted needs maintenance
Smaller community than Mailgun
Cloud version gets expensive
Limited compared to full marketing platforms

Why Consider Alternatives to Mailgun

The 2025 price increase hit hard

Mailgun doubled Flex plan pricing from $1 to $2 per 1,000 emails in late 2025. For many users, this made alternatives like Postmark or Amazon SES more attractive at volume.

Sinch acquisition concerns

Since Sinch bought Mailgun, some users worry about long-term direction and pricing. The company now owns both Mailgun and Mailjet, consolidating the market.

Developer experience fell behind

Compared to modern APIs like Resend, Mailgun's DX shows its age. If you're starting fresh, newer platforms offer cleaner SDKs and better documentation.

No marketing features

Mailgun is transactional only. If you need marketing automation, campaigns, and visual builders, you'll need a second tool. Platforms like Sequenzy or Brevo include both.

What Users Say About Mailgun

Trustpilot

Initially, it took a while for the first-level support to understand my need. Once I escalated to the second level, it was very quick and efficient.

Marcello Guimaraes2026-02

Trustpilot

If you want to see the world's worst support system, you should check their support system. You will open a ticket, and they will reply after 48 hours minimum. I just wonder why they even have a support system.

Shahriar Alam2026-02

Trustpilot

Terrible experience. The system blocked my phone verification with a 'Too many activation codes requested' message, and now I can't activate my account at all. Support is slow and provides no real solution.

Andi Boja2026-02

Trustpilot

I opened a ticket about a programming issue, and Merit responded. He was very helpful and brief on the matter.

Beatriz Pereira2026-02

Trustpilot

Support team and their follow up is very good. I would like to give full score for their effort.

Alen2026-02

Feature

Mailgun

Sequenzy

Resend

Postmark

Amazon SES

SendGrid

Price at 50k/mo

~$100*

$49*

$20

$50

$19.95

DX quality

Good

Best

Great

None

Dated

Transactional

Marketing

SMTP relay

Deliverability

Good

Best

DIY

Variable

When to Use Each Platform

Choose Sequenzy if...

You want marketing + transactional in one
AI-generated email sequences appeal to you
You use Stripe and want automatic sync
You prefer subscriber-based pricing

Choose Stay with Mailgun if...

You've already built around their API
You need SMTP relay
Inbound email parsing is critical
You prefer pay-per-email pricing

Choose Resend if...

Developer experience is your top priority
You only need transactional email
You love React Email
Modern SDKs matter to you

Choose Postmark if...

Deliverability is absolutely critical
You want a platform that rejects bad actors
Human support matters
You're sending critical transactional emails

Choose Amazon SES if...

Cost is everything at massive volume
You have engineering resources for DIY
You're already deep in AWS
You don't need any hand-holding

Why people leave Mailgun

Mailgun has been a solid transactional email API for years. But recent changes have pushed many users to evaluate alternatives. To understand what modern email platforms offer, read our guide to best email marketing tools for SaaS. With over 1,400 reviews on Trustpilot, the feedback is polarized—some praise the reliability and scale, while others cite painfully slow support response times and frustrating account verification issues. The late 2025 price doubling on the Flex plan was the tipping point for many smaller teams who now pay twice as much for the same service.

The 2025 price increase

Mailgun doubled the Flex plan from $1 to $2 per 1,000 emails in late 2025. For small-volume users, this made alternatives like Postmark ($15/10k) or Resend ($20/50k) suddenly more attractive. The Foundation plan also starts at $35/mo now. Check our Mailgun comparison page for current pricing breakdown.

The Sinch question

Sinch acquired Mailgun, and now owns both Mailgun and Mailjet. Some users worry about consolidation and future pricing. When one company owns multiple competitors, the incentive to compete on price disappears. If you're weighing your options, our email marketing platform comparison covers the full landscape.

Developer experience fell behind

When Resend launched with React Email and beautiful SDKs, it made Mailgun feel dated. The API works fine, but the developer experience isn't keeping pace with modern alternatives. If you're starting fresh, there are better options for transactional emails. See how modern platforms handle email editor design compared to Mailgun's template-less approach.

Transactional only

Mailgun doesn't do marketing. If you need campaigns, automation, or visual builders, you'll need a second tool. Platforms like Sequenzy or Brevo combine everything. For SaaS companies specifically, the combination of Stripe integration with marketing automation saves significant engineering time.

The alternatives, honestly

If you want modern DX: Resend

Resend is what Mailgun would be if built today. Beautiful API, React Email integration, modern SDKs for every language. The developer experience is unmatched. The catch: transactional only, no SMTP. But for modern apps, the API approach is usually better anyway. See our Resend comparison.

If you need marketing + transactional: Sequenzy

Sequenzy combines transactional and marketing with AI-powered sequences. Native Stripe integration syncs customer data automatically. It's $49/month for 120k emails (unlimited subscribers), including both marketing campaigns and transactional API.

No SMTP relay, but API-based integration is cleaner for most SaaS. The visual email editor means non-technical team members can build emails too. See our Mailgun comparison for details.

If deliverability is critical: Postmark

Postmark has the best deliverability because they're strict about customers. They'll reject you if your use case seems sketchy. This keeps IP reputation pristine. If your app depends on emails arriving (password resets, 2FA), this matters. Check our Postmark comparison.

If cost is everything: Amazon SES

At $0.10 per 1,000 emails, nothing beats SES on raw cost. But you get zero help—no templates, no dashboard, no deliverability tools. Only choose this if you have engineering resources to build everything yourself. Check our Amazon SES comparison. Or consider Sendy as a self-hosted UI layer on top of SES.

If you want to stay in the family: SendGrid

SendGrid and Mailgun are now siblings under Sinch. SendGrid has marketing features Mailgun lacks. Similar API maturity, similar pricing. If you're leaving Mailgun but want something familiar, SendGrid is the obvious alternative. See our SendGrid comparison.

If you need SMTP relay specifically: SMTP2GO

For teams whose primary concern is reliable SMTP relay—the feature Mailgun is most known for—SMTP2GO is the most direct replacement. Swap credentials and you're done. Better support, simpler pricing, and none of the corporate acquisition drama.

If you want self-hosted control: Mailcoach

For teams who want provider independence, Mailcoach lets you use any email provider (including Mailgun) and switch freely. Built on Laravel, it's particularly appealing for PHP teams who want to own their email infrastructure.

The pricing comparison

At 50,000 emails/month:

Mailgun Scale: ~$100/month (after 2025 increase)
Resend: $20/month (transactional only, best DX)
Postmark: $50/month (best deliverability)
SendGrid Essentials: $19.95/month
Amazon SES: $5/month (DIY everything)
Sequenzy: $49/mo for 120k emails (marketing + transactional)
SMTP2GO: $25/month (SMTP relay focused)
MailerSend: $25/month (clean transactional)

Note: Some prices are per email (Mailgun, Postmark) while others are per subscriber (Sequenzy, Loops). Compare based on your actual usage. See our pricing page and use our email warmup calculator if you're planning a migration.

When Mailgun is still the right choice

Mailgun wins if:

You've already built extensively around their API
You need SMTP relay for legacy systems
Inbound email parsing is critical for your app
You prefer pay-per-email pricing
Email validation API is important to you

Don't switch just because of the price increase. Migration has costs too. But if you're frustrated with the DX, need marketing features, or the new pricing doesn't work—the alternatives are genuinely better. Use our email warmup calculator to plan your transition and check your DMARC records before switching providers.

Frequently Asked Questions

All Pricing Tiers

2.5k emails/month: Free (Free annually)

15k emails/month: $19/month ($205/year annually)

60k emails/month: $29/month ($313/year annually)

120k emails/month: $49/month ($529/year annually)

300k emails/month: $99/month ($1069/year annually)

600k emails/month: $199/month ($2149/year annually)

1.2M emails/month: $349/month ($3769/year annually)

Unlimited emails/month: Custom pricing (Custom annually)

Yearly billing: All plans offer a 10% discount when billed annually.

19 Mailgun Alternatives Worth Considering

TL;DR

19 Best Mailgun Alternatives

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Why Consider Alternatives to Mailgun

What Users Say About Mailgun

Feature Comparison

When to Use Each Platform

Why people leave Mailgun

The 2025 price increase

The Sinch question

Developer experience fell behind

Transactional only

The alternatives, honestly

If you want modern DX: Resend

If you need marketing + transactional: Sequenzy

If deliverability is critical: Postmark

If cost is everything: Amazon SES

If you want to stay in the family: SendGrid

If you need SMTP relay specifically: SMTP2GO

If you want self-hosted control: Mailcoach

The pricing comparison

When Mailgun is still the right choice

Frequently Asked Questions

What's the best Mailgun alternative for developers?

Why did Mailgun prices increase in 2025?

Is Resend better than Mailgun?

What's cheaper than Mailgun for high volume?

Does Mailgun have marketing automation?

Mailgun vs SendGrid: Which is better?

Does Sequenzy support SMTP like Mailgun?