Mailgun Alternatives 2026, Compared Independently
Email Delivery · 8 compared · Updated
No vendor pays to appear or rank here. Alternatives are ordered by our reviewed relationships, then shared capabilities.
Mailgun has deprecated its Flex pay-as-you-go plan, which charged per message with no monthly fee. Its help centre now keeps the plan only as a reference for legacy accounts, so low-volume senders who relied on it are comparing other options.
- Closest match
- Amazon SES
- Direct replacements
- 3 of 8
- Pricing
- From $0.10 per 1,000 emails (à la carte outbound) · From $19.95/month · From $20/mo
- Typical switching effort
- Medium
No referral fees. Ordering is by approved relationship, then capability overlap. Nobody pays for a place in it.
Why teams look for Mailgun alternatives
What changed, when, and who it affects. Each reason links to its source, with the line it rests on.
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Retirement
Pay-as-you-go Flex plan deprecated, now legacy-only
Mailgun no longer offers its per-message Flex plan, which had no monthly fee. Its help centre keeps the Flex article only for accounts still on the plan. Low-volume senders who don't want a monthly subscription are affected.
The Flex plan was a formerly offered Pay-As-You-Go (PAYG) billing model where each message accrued a charge.
Mailgun (Sinch) Help Center -
Pricing ·
Flex plan per-message price doubled
Remaining Flex accounts were moved automatically from $1.00 to $2.00 per 1,000 messages, with no action needed from them. This affects legacy low-volume and newsletter senders still on Flex.
we'll be updating our Flex plan pricing on December 1, 2025, from $1.00 per 1,000 messages to $2.00 per 1,000 messages.
LowEndTalk (reproducing Mailgun customer email)
What Mailgun is, in short
Mailgun (part of Sinch/Pathwire) is a developer-focused email API, competing with SendGrid (Twilio), Amazon SES, and Postmark in the email infrastructure space. It provides SMTP and REST APIs for sending transactional and bulk email, with advanced features like email validation, inbound routing, and detailed delivery analytics. Mailgun's strength is its developer experience and email-specific tooling — particularly email validation (verifying addresses before sending), inbound email processing (routing received emails to webhooks), and detailed SMTP logs. It is ideal for engineering teams building applications that need reliable email delivery with fine-grained control. Compared to SendGrid (broader marketing features, Twilio ecosystem), Mailgun is more developer-focused and offers better email validation.
Versus Amazon SES (cheapest per-message), Mailgun provides a better developer experience and more features at slightly higher cost. Buyers should choose Mailgun for transactional email in applications where developer experience and email validation matter. For marketing email with visual editors, SendGrid or Mailchimp are better choices. For maximum cost efficiency at scale, Amazon SES is cheaper. Consider Postmark for best-in-class transactional deliverability.
Mailgun alternatives compared
Ranked by relationship first — a tool approved as a direct replacement outranks one that merely shares capabilities. Tools judged to be complements to Mailgun are excluded, because running both is not the same as replacing it. Direct-replacement verdicts were checked by hand; the one-line verdicts were drafted by an AI model, and most partial-overlap verdicts were accepted on its confidence.
Scroll the table sideways for switching effort and pricing →
| Vendor | Shared capabilities with Mailgun | Switching effort | Pricing | Also strong in | Compare |
|---|---|---|---|---|---|
 Amazon SES 2 core capabilities | Direct replacement Email Deliverability Email Delivery Transactional Email Both primarily provide email sending infrastructure for transactional and bulk delivery, and most companies only need one provider of record. | Medium | From $0.10 per 1,000 emails (à la carte outbound) | — | vs Amazon SES |
 Twilio SendGrid 4 core capabilities | Direct replacement Campaign Management Email Deliverability Email Delivery +2 more Both are email delivery providers used by the same technical buyer to send and manage email (especially transactional), and most companies standardize on one sender infrastructure. | Medium | From $19.95/month | — | vs Twilio SendGrid |
 Resend 9 core capabilities | Direct replacement Agent Interface (MCP / Tool API) Audience Segmentation Campaign Management +6 more Mailgun and Resend are both developer-focused email delivery providers serving the same transactional sending workload. | Medium | From $20/mo | — | vs Resend |
 Brevo 10 core capabilities | Partial overlap Campaign Management Contact / Account Management Email Delivery +2 more Both can send marketing and transactional email, but Brevo is a broader marketing/CRM suite while Mailgun is focused on developer-centric email delivery and deliverability controls, so orgs sometimes run both for different email types. | Medium | Freemium | SMS / MMS Journey Orchestration | About Brevo |
 Salesforce Marketing Cloud 19 core capabilities | Partial overlap Audience Segmentation Campaign Management Contact / Account Management +4 more Both can send marketing and transactional email, but Salesforce Marketing Cloud is a full cross-channel marketing suite while Mailgun is a developer-first sending API often kept for app-triggered transactional mail and deliverability control. | Medium | From $1,500 USD/org/month (billed annually) | Journey Orchestration SMS / MMS | About Salesforce Marketing Cloud |
 MessageBird (Bird) 9 core capabilities | Partial overlap Email Delivery Marketing Email Transactional Email Both can send email, but MessageBird is built as a multi-channel CPaaS (SMS/WhatsApp/voice) while Mailgun is a specialized email infrastructure provider. | Medium | From $0.0035 per US outbound SMS segment (long code/toll-free) + carrier fees | SMS / MMS Conversational AI / Virtual Agents | About MessageBird (Bird) |
 Voyado 13 core capabilities | Partial overlap Audience Segmentation Campaign Management Contact / Account Management +3 more Voyado sends its own marketing and transactional email, including order confirmations and password resets, so it overlaps with Mailgun; Mailgun stays a developer email API, while Voyado is a retail CRM and loyalty suite. | Medium | Custom | Journey Orchestration Loyalty & Rewards | About Voyado |
 Mailtrap 5 core capabilities | Campaign Management Email Deliverability Email Delivery +2 more | — | From $15/month | — | About Mailtrap |
What to look for in a Mailgun alternative
Mailgun’s core capabilities — check each alternative for coverage of these before shortlisting:
- Transactional Email
- Email Deliverability
- Email Delivery
Mailgun alternatives — FAQ
What is the best alternative to Mailgun?
Amazon SES is the closest match among the 8 Email Delivery alternatives we track. The two records share 3 core capabilities (Email Deliverability, Email Delivery). Both primarily provide email sending infrastructure for transactional and bulk delivery, and most companies only need one provider of record. The right choice depends on your existing stack — compare all 8 in the table above.
What should I look for in a Mailgun alternative?
Mailgun’s core strengths are Transactional Email, Email Deliverability, Email Delivery. Prioritise alternatives that cover the capabilities you actually use, and that integrate cleanly with the rest of your stack — a replacement that doesn’t connect to your warehouse, CDP, or activation tools isn’t really a replacement.
How much do Mailgun alternatives cost?
Pricing varies — alternatives here range across From $0.10 per 1,000 emails (à la carte outbound), From $19.95/month, From $20/mo, Freemium. Check each vendor’s page for current rates.
How hard is it to migrate off Mailgun?
Across the alternatives on this page, the typical switching effort is medium. Expect to remap configuration and re-verify downstream integrations, but not to rebuild your data model from scratch. The switching-effort column above shows the per-vendor judgement.
Can I compare Mailgun and Amazon SES side by side?
Yes. Drop both onto a canvas in Martech Stack Builder and see how each integrates with your warehouse, CDP, and activation tools — then score them against your actual requirements before deciding.
Mailgun head-to-head
Deciding between two specific tools? See the full side-by-side capability comparison:
Shortlisting three?
Three-way comparisons where every pair is a reviewed substitute for Mailgun.
Compare the rest of the field
Evaluating more than one? Each alternative above has its own ranked comparison. They follow the approved relationships rather than the category, so they cross categories where the tools compete.
Before you replace Mailgun, check what you already own
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Browse all Email Delivery vendors
Stack Builder’s Email Delivery page compares every vendor we track in this category, with capabilities, pricing, and a head-to-head for the closest pairs.
View all Email Delivery vendors →Evaluating Mailgun alternatives? Do it in your stack’s context.
Drop Mailgun and the alternatives onto a canvas, see how they integrate with what you already have, and score them against your actual requirements — not a generic feature list.
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