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Alternatives

Mailgun alternatives

Four email services a developer leaving Mailgun would actually consider, weighed on inbound mail, signed webhooks, agent tooling and what an extra thousand emails costs. Every figure was read from the vendor's own page on 2026-10-17.

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Mailgun
Mailgun is an email API from Sinch with six official SDKs, an SMTP relay, rule-based inbound routing and signed webhooks, sold on plans whose log retention grows with the tier.
What this page is
A list of four email services that would take the mail Mailgun sends for you today, compared on the same rows and against the same sources. Rasket is one of them, and we build it — so every claim we make about ourselves is linked to a Rasket page, and every claim about anybody else is linked to theirs.

Key takeaways

  • Extra emails, per 1,000 — Rasket: $0.60. Mailgun: From $1.80 on Basic.
  • Entry paid plan — Rasket: $20 a month for 50,000 emails. Mailgun: $15 a month for 10,000 emails.
  • Free plan — Rasket: 3,000 emails a month, 100 emails a day, 3 domains. Mailgun: 100 emails a day.
  • Inbound email — Rasket: Yes. Mailgun: 1 route on Free, 5 on Basic, full routing from Foundation.
  • Official SDKs — Rasket: Coming soon. Mailgun: Ruby, PHP, Python, Java, Go and Node.js.

Why developers look for a Mailgun alternative

Three reasons that are rows of the table below rather than opinions. Each one is something Mailgun publishes about itself.

  • Free and Basic keep one day of log retention, and thirty days needs the Scale plan.
  • Extra email starts at $1.80 per thousand on Basic, against $0.60 on Rasket.
  • The pricing page does not say whether marketing or campaign sending is included, so it is not something you can check before you buy.

None of those is a reason on its own. They are reasons if they describe what you are doing: a product past its free tier, a support conversation longer than the history you can read, a campaign you would rather not buy twice.

Four alternatives to Mailgun

Rasket is first because we build it, and you should read the table before you take our word for the order.

  1. 1.Rasket

    Yes, on retention and price in particular. Mailgun keeps one day of logs on its Free and Basic plans and thirty only at Scale; every self-serve Rasket plan keeps thirty. Extra email starts at $1.80 per thousand on Basic against $0.60 on Rasket. What Mailgun has and Rasket does not is six published SDKs, a dedicated IP included from Foundation 100k, and rule-based inbound routing.

    Best for: Products that send campaigns and receive replies as well as sending receipts

  2. 2.MailerSend

    MailerSend is an email API with seven official libraries, an SMTP relay, signed webhooks, inbound routing and an MCP server, sold on small plans that start below every other entry price here. Free plan: 500 emails a month, 1 domain, 1 template. Extra emails, per 1,000: $0.90 on Starter and Professional.

    Best for: Small projects that want the cheapest paid plan on this list

  3. 3.Brevo

    Brevo is a marketing platform with a transactional email API attached: an SMTP relay, seven official SDKs, authenticated webhooks, inbound parsing, idempotency keys for batch sends and an MCP server. Free plan: 300 emails a day. Extra emails, per 1,000: No per-1,000 rate: email volume is bought in steps.

    Best for: Teams who want marketing, CRM and transactional email from one vendor

  4. 4.Resend

    Resend is an email API with a dashboard, official SDKs in eight languages and a documentation set written for agents as well as people; its transactional plans and its marketing plans are priced apart. Free plan: 3,000 emails a month, 100 emails a day, 3 domains. Extra emails, per 1,000: $0.90.

    Best for: Teams writing their emails as React components

The four, row by row

The same rows for all four, with the source of every cell numbered at the foot of the page.

Four alternatives to Mailgun, compared row by row
CriterionRasketMailerSendBrevoResend
Sending and receiving
Inbound emailYes 1Receive at your own domain on every plan, delivered as a signed webhook.Yes 13The plan table marks inbound routing on every plan, Free included.Yes 19Inbound parse webhooks, documented in their developer guide.Yes 29The pricing page lists inbound emails under "All plans include", and counts each received email toward the monthly sending quota.
Transactional and campaigns on one planYes 2A campaign travels the same send pipeline as a password reset, on the same plan and the same key.Not published 14Marketing campaigns and transactional email are both in the API 20Marketing email is priced as a separate plan 29Marketing plans are priced by contacts, from $40 a month for 5,000.
Idempotent sendsYes 4An Idempotency-Key is remembered for 24 hours.Not published 16For batch transactional email 22An idempotencyKey, remembered for 30 minutes.Yes 32Idempotency keys are kept for 24 hours.
Versioned templatesYes 5Published versions with typed variables; every send records the version it used.Not published 16Not published 20Yes 33Templates carry a version history.
AutomationsYes 6Not published 14Workflows, started by events their tracker records 23Yes 34
SMTP relayYes 11smtp.rasket.com on 465 or 587, an API key as the password. Each message is an API send.Yes 14Yes 28Yes 38
DKIM key size2048-bit, one key per domain 12Not published 16Not published 20Not published 39
Webhooks and developer tools
Signed webhooksYes 3Yes 15A Signature header holding an HMAC-SHA256 of the body, keyed by a per-webhook signing secret.No signature: IP allowlist, basic auth or a token 21Their secure-webhooks guide offers allowlisting Brevo's IP ranges, a username and password in the URL, a bearer token or custom headers; it describes no signature over the payload.Yes 30
Replay a webhook eventYes 3Send the event again from the dashboard or the API; a replay carries the identical payload under the same event id.Not published 15Not published 20Yes 31
MCP serverYes 7An HTTP MCP server with seven toolsets, plus a setup skill.Yes 17Yes 24Yes 35A hosted server and a self-hosted one, both listed in their index for agents.
Markdown docs and llms.txtYes 8Markdown at every docs URL, with llms.txt and llms-full.txt.Yes 18A .md suffix on a developer documentation URL returns Markdown, and the developer site's llms.txt indexes it.Yes 20A .md suffix on a developer documentation URL returns Markdown, and llms.txt indexes them.Yes 36Every docs URL answers to a .md suffix, and llms.txt indexes them.
Official SDKsComing soon 9Coming soon: the rasket package is not published yet. Today, every language sends over the REST API.PHP, Laravel, Node.js, Go, Python, Ruby and Java 16Node.js, PHP, Python, Java, C#, Go and Ruby 25Node.js, PHP (and Laravel), Python, Ruby, Go, Java, Rust and .NET 37Elixir is listed as a community SDK, not an official one.
Plans and pricing
Free plan3,000 emails a month, 100 emails a day, 3 domains 10500 emails a month, 1 domain, 1 template 13A card is asked for when you subscribe, though the plan is free.300 emails a day 26Sending opens once Brevo approves the account.3,000 emails a month, 100 emails a day, 3 domains 29
Entry paid plan$20 a month for 50,000 emails 10$7 a month for 5,000 emails 14The Hobby plan, paying monthly.$9 a month for 5,000 emails 27The Starter plan, paying monthly. Their pricing FAQ says every plan includes the transactional email features.$20 a month for 50,000 emails 29
Extra emails, per 1,000$0.60 10The rate steps down to $0.25 as the Scale ladder climbs.$0.90 on Starter and Professional 14That is the plan cards' rate; Hobby's card says $1.50. The same page's FAQ prices extra mail at $1.30 per 1,000 on the 100,000-email Starter tier, so the page gives two figures.No per-1,000 rate: email volume is bought in steps 27On Starter, 50,000 emails a month is the $9 plan plus a $47 step, by the Markdown price list on their site.$0.90 29On Pro and the first Scale tier; it steps down to $0.46 at 2,500,000 emails a month.
Data retention30 days on the self-serve plans 10Custom retention on a Custom plan.1 day on Free and Hobby, 7 on Starter, 30 on Professional 13Unlimited log retention 26Their pricing FAQ lists it among the transactional email features every plan includes.30 days on the self-serve plans 29Free, Pro and Scale; Enterprise retention is listed as flexible.
Dedicated IP$30 a month per address on Scale 10Recommended above 5,000 emails a day; the choice is the customer's.For Enterprise accounts sending over 100,000 emails a week 14The plan table also lists a dedicated IP add-on on Professional; no price is stated.Listed on the Enterprise plan 26No price is published; Enterprise is sold through their sales team.$30 a month on Scale, for senders above 3,000 emails a day 29
Best forProducts that send campaigns and receive replies as well as sending receiptsSmall projects that want the cheapest paid plan on this listTeams who want marketing, CRM and transactional email from one vendorTeams writing their emails as React components

Moving your domain off Mailgun

Add the domain in Rasket, publish the DKIM, SPF and DMARC records we generate, and leave Mailgun sending until verification passes. Then move the call to POST /emails with the key in an Authorization header, or, for an app on their SMTP service, swap the postmaster login for the username rasket and a Rasket key and point it at smtp.rasket.com. Inbound routes become a receiving domain and one signed webhook, with the matching you were expressing as rules written in your handler instead; your existing webhook verification is replaced by checking Rasket's signature, and you can replay an event from the dashboard while you get it right.

Nothing about a verified sending domain is exclusive, so both providers can hold it while you move. Send a small share of your mail through the new one first, watch the delivery and bounce events, and cut the rest over once the numbers look like the old ones.

Frequently asked questions

What is the best Mailgun alternative for developers?

We build Rasket, so read this as a disclosed preference and not a verdict. Yes, on retention and price in particular. Mailgun keeps one day of logs on its Free and Basic plans and thirty only at Scale; every self-serve Rasket plan keeps thirty. Extra email starts at $1.80 per thousand on Basic against $0.60 on Rasket. What Mailgun has and Rasket does not is six published SDKs, a dedicated IP included from Foundation 100k, and rule-based inbound routing.

Is there a free Mailgun alternative?

Rasket: 3,000 emails a month, 100 emails a day, 3 domains. MailerSend: 500 emails a month, 1 domain, 1 template. Brevo: 300 emails a day. Resend: 3,000 emails a month, 100 emails a day, 3 domains. Each figure is from that vendor's own pricing page on 2026-10-17.

Which Mailgun alternative includes inbound email?

Rasket: Yes. MailerSend: Yes. Brevo: Yes. Resend: Yes. Inbound means receiving mail at your own domain, not just sending from it.

Which Mailgun alternative works with AI agents?

Rasket: Yes. MailerSend: Yes. Brevo: Yes. Resend: Yes. An MCP server is what lets an assistant call the API directly; Markdown docs and llms.txt is the other half, and it reads: Rasket: Yes. MailerSend: Yes. Brevo: Yes. Resend: Yes.

How do I move my domain off Mailgun?

Add the domain in Rasket, publish the DKIM, SPF and DMARC records we generate, and leave Mailgun sending until verification passes. Then move the call to POST /emails with the key in an Authorization header, or, for an app on their SMTP service, swap the postmaster login for the username rasket and a Rasket key and point it at smtp.rasket.com. Inbound routes become a receiving domain and one signed webhook, with the matching you were expressing as rules written in your handler instead; your existing webhook verification is replaced by checking Rasket's signature, and you can replay an event from the dashboard while you get it right.

Sources

  1. 1Rasket — https://www.rasket.com/features/receiving. Read 2026-09-16.
  2. 2Rasket — https://www.rasket.com/features/broadcasts. Read 2026-10-17.
  3. 3Rasket — https://www.rasket.com/features/webhooks. Read 2026-10-17.
  4. 4Rasket — https://www.rasket.com/docs/idempotency. Read 2026-10-17.
  5. 5Rasket — https://www.rasket.com/features/templates. Read 2026-10-17.
  6. 6Rasket — https://www.rasket.com/features/automations. Read 2026-10-17.
  7. 7Rasket — https://www.rasket.com/features/agents. Read 2026-09-16.
  8. 8Rasket — https://www.rasket.com/llms.txt. Read 2026-09-16.
  9. 9Rasket — https://www.rasket.com/docs/quickstart. Read 2026-10-17.
  10. 10Rasket — https://www.rasket.com/pricing. Read 2026-10-17.
  11. 11Rasket — https://www.rasket.com/docs/smtp. Read 2026-09-29.
  12. 12Rasket — https://www.rasket.com/features/domains. Read 2026-10-17.
  13. 13MailerSend — https://www.mailersend.com/pricing.md. Read 2026-10-17.
  14. 14MailerSend — https://www.mailersend.com/pricing. Read 2026-10-17.
  15. 15MailerSend — https://developers.mailersend.com/api/v1/account/webhooks. Read 2026-10-17.
  16. 16MailerSend — https://developers.mailersend.com/. Read 2026-10-17.
  17. 17MailerSend — https://developers.mailersend.com/mcp. Read 2026-10-17.
  18. 18MailerSend — https://developers.mailersend.com/llms.txt. Read 2026-10-17.
  19. 19Brevo — https://developers.brevo.com/docs/inbound-parse-webhooks. Read 2026-10-17.
  20. 20Brevo — https://developers.brevo.com/llms.txt. Read 2026-10-17.
  21. 21Brevo — https://developers.brevo.com/docs/secured-webhooks. Read 2026-10-17.
  22. 22Brevo — https://developers.brevo.com/docs/heterogenous-versions-batch-emails. Read 2026-10-17.
  23. 23Brevo — https://developers.brevo.com/guides/track-website-activity. Read 2026-10-17.
  24. 24Brevo — https://developers.brevo.com/docs/mcp-protocol. Read 2026-10-17.
  25. 25Brevo — https://developers.brevo.com/docs/api-clients. Read 2026-10-17.
  26. 26Brevo — https://www.brevo.com/pricing/. Read 2026-10-17.
  27. 27Brevo — https://www.brevo.com/pricing.md. Read 2026-10-17.
  28. 28Brevo — https://developers.brevo.com/docs/smtp-integration. Read 2026-10-17.
  29. 29Resend — https://resend.com/pricing. Read 2026-10-17.
  30. 30Resend — https://resend.com/docs/webhooks/verify-webhooks-requests. Read 2026-10-17.
  31. 31Resend — https://resend.com/docs/webhooks/retries-and-replays. Read 2026-10-17.
  32. 32Resend — https://resend.com/docs/dashboard/emails/idempotency-keys. Read 2026-10-17.
  33. 33Resend — https://resend.com/docs/dashboard/templates/version-history. Read 2026-10-17.
  34. 34Resend — https://resend.com/docs/dashboard/automations/introduction. Read 2026-10-17.
  35. 35Resend — https://resend.com/llms.txt. Read 2026-10-17.
  36. 36Resend — https://resend.com/docs/llms.txt. Read 2026-10-17.
  37. 37Resend — https://resend.com/docs/sdks.md. Read 2026-10-17.
  38. 38Resend — https://resend.com/docs/send-with-smtp. Read 2026-10-17.
  39. 39Resend — https://resend.com/docs/dashboard/domains/introduction. Read 2026-10-17.

Last checked 2026-10-17. Prices and plan contents change. Every figure above was read from the linked page on the date beside it; if one has moved since, the page it came from is the one to trust.

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