Rasket vs MailerSend
Both send email over a REST API. Every row below was read from Rasket's own pages and MailerSend's own pages on 2026-09-16, and every one of them links to the page it came from.
- Rasket
- Rasket is an email API for developers: one REST API, a dashboard and typed SDKs for transactional email and broadcasts, with inbound mail, signed webhooks and an MCP server in the same product and on the same key.
- MailerSend
- MailerSend is an email API with six official libraries, an SMTP relay, signed webhooks and an MCP server, sold on small plans that start below every other entry price here.
Key takeaways
- Extra emails, per 1,000 — Rasket: $0.60. MailerSend: $1.30 on Starter and Professional.
- Free plan — Rasket: 3,000 emails a month, 100 a day, 3 domains. MailerSend: 500 emails a month, 1 domain, 1 template.
- Inbound email — Rasket: Yes. MailerSend: On the Starter and Professional plans.
- Transactional and broadcasts on one plan — Rasket: Yes. MailerSend: Not published.
- Official SDKs — Rasket: Node.js and Python. MailerSend: PHP, Node.js, Go, Python, Ruby and Java.
How they compare
Rasket first, then the same row for the other product. A number beside a cell is the source it was read from; the list at the foot of the page has the link and the date.
| Criterion | Rasket | MailerSend |
|---|---|---|
| Inbound email | Yes Rasket, source 1Receive at your own domain on every plan, delivered as a signed webhook. | On the Starter and Professional plans MailerSend, source 13 |
| Transactional and broadcasts on one plan | Yes Rasket, source 2A broadcast travels the same send pipeline as a password reset, on the same plan and the same key. | Not published MailerSend, source 13 |
| Signed webhooks | Yes Rasket, source 3 | Yes MailerSend, source 14A Signature header holding an HMAC-SHA256 of the body, keyed by a per-webhook signing secret. |
| Replay a webhook event | Yes Rasket, source 3Send the event again from the dashboard or the API; a replay carries the identical payload under the same event id. | Not published MailerSend, source 14 |
| Idempotent sends | Yes Rasket, source 4An Idempotency-Key is remembered for 24 hours. | Not published MailerSend, source 15 |
| Versioned templates | Yes Rasket, source 5Published versions with typed variables; every send records the version it used. | Not published MailerSend, source 15 |
| Automations | Yes Rasket, source 6 | Not published MailerSend, source 13 |
| MCP server | Yes Rasket, source 7An HTTP MCP server with seven toolsets, plus a setup skill. | Yes MailerSend, source 16 |
| Markdown docs and llms.txt | Yes Rasket, source 8Markdown at every docs URL, with llms.txt and llms-full.txt. | An llms.txt index MailerSend, source 17The index is published; a .md suffix on a help URL answered 404 on the day. |
| Official SDKs | Node.js and Python Rasket, source 9 | PHP, Node.js, Go, Python, Ruby and Java MailerSend, source 15 |
| Free plan | 3,000 emails a month, 100 a day, 3 domains Rasket, source 10 | 500 emails a month, 1 domain, 1 template MailerSend, source 13 |
| Entry paid plan | $20 a month for 50,000 emails Rasket, source 10 | $7 a month for 5,000 emails MailerSend, source 13The Hobby plan, paying monthly; the page opens on yearly billing, where the same plan is $5.60 a month. |
| Extra emails, per 1,000 | $0.60 Rasket, source 10The rate steps down to $0.25 as the Scale ladder climbs. | $1.30 on Starter and Professional MailerSend, source 13The page does not state a rate for the entry Hobby plan. |
| Data retention | 30 days on the self-serve plans Rasket, source 10Custom retention on a Custom plan. | 1 day on Free and Hobby, 7 on Starter, 30 on Professional MailerSend, source 13 |
| Dedicated IP | An add-on on Scale Rasket, source 10 | An add-on above 100,000 emails a week MailerSend, source 13The page does not state its price. |
| SMTP relay | No Rasket, source 11Sending is the REST API, the SDKs and the MCP server. There is no relay to point a mail client at. | Yes MailerSend, source 13 |
| DKIM key size | 2048-bit, one key per domain Rasket, source 12 | Not published MailerSend, source 15 |
| Best for | Developers who want sending, receiving and broadcasts behind one API key | Small projects that want the cheapest paid plan on this list |
Where MailerSend wins
MailerSend's entry plan is the cheapest on this page: $7 a month for 5,000 emails, against $20 for 50,000 on Rasket, so a side project sending a few thousand messages pays less there than here. They publish six official libraries to our two and run an SMTP relay. If your volume is small and steady and you do not need inbound mail, the arithmetic favours them and it would be dishonest to dress that up.
The verdict
Which way this goes depends almost entirely on volume. Under about five thousand emails a month MailerSend is cheaper, and their free plan asks less of you than a card does. Above that the comparison inverts: Rasket's $20 covers 50,000 emails where their $7 covers 5,000, inbound mail arrives on every Rasket plan rather than on Starter and above, and history is thirty days on the self-serve plans against one day on Free and Hobby. Both sign webhooks and both publish an MCP server, so the developer-experience rows are close.
Frequently asked questions
Is Rasket a good alternative to MailerSend?
Yes, once you are past a few thousand emails a month. Rasket's entry plan is $20 for 50,000 emails where MailerSend's is $7 for 5,000, inbound mail is on every Rasket plan rather than Starter and above, and history is thirty days against one on their Free and Hobby plans. Below that volume MailerSend is genuinely cheaper, and they have more SDK languages and an SMTP relay.
Does MailerSend include inbound email?
MailerSend: On the Starter and Professional plans. Rasket receives mail at your own domain on every plan, including the free one, and delivers each message to a signed webhook with its headers, text, HTML and attachments.
Which is cheaper at 50,000 emails a month?
At 50,000 emails a month Rasket is $20 on the Pro plan. MailerSend's Starter plan is $35 at that volume on the pricing page's own slider, and their entry Hobby plan covers 5,000 emails for $7, so it does not reach this figure. Both pages were read on the same day, and both show prices that depend on a monthly or yearly billing toggle, so check the toggle before comparing.
Does Rasket have an SMTP relay?
No. Rasket sends over the REST API, the Node and Python SDKs, and the MCP server, and there is no relay to point a mail client or an off-the-shelf application at. If moving means changing an SMTP host rather than changing code, that is a real reason to stay where you are.
Can I migrate from MailerSend to Rasket?
Verify the domain in Rasket with the DKIM, SPF and DMARC records we generate, then point your sends at POST /emails. Templates are rewritten once and published as a version with typed variables; contacts come across as a CSV import. Your webhook endpoint is recreated in Rasket with its own signing secret — the verification is the same idea, an HMAC over the body — and you can replay an event from the dashboard rather than waiting for the next real one.
Which is better for AI agents?
Both publish for them, and neither is far ahead. MailerSend runs an MCP server and an llms.txt index; Rasket runs an MCP server with seven toolsets, a setup skill, Markdown at every docs URL, llms.txt and llms-full.txt. On the day we checked, a .md suffix on a MailerSend help URL answered 404, so an assistant reading their documentation is parsing web pages rather than Markdown.
Sources
- 1. Rasket — http://localhost:3000/features/receiving. Read 2026-09-16.
- 2. Rasket — http://localhost:3000/features/broadcasts. Read 2026-09-16.
- 3. Rasket — http://localhost:3000/features/webhooks. Read 2026-09-16.
- 4. Rasket — http://localhost:3000/docs/idempotency. Read 2026-09-16.
- 5. Rasket — http://localhost:3000/features/templates. Read 2026-09-16.
- 6. Rasket — http://localhost:3000/features/automations. Read 2026-09-16.
- 7. Rasket — http://localhost:3000/features/agents. Read 2026-09-16.
- 8. Rasket — http://localhost:3000/llms.txt. Read 2026-09-16.
- 9. Rasket — http://localhost:3000/about. Read 2026-09-16.
- 10. Rasket — http://localhost:3000/pricing. Read 2026-09-16.
- 11. Rasket — http://localhost:3000/features/email-api. Read 2026-09-16.
- 12. Rasket — http://localhost:3000/features/domains. Read 2026-09-16.
- 13. MailerSend — https://www.mailersend.com/pricing. Read 2026-09-16.
- 14. MailerSend — https://developers.mailersend.com/api/v1/webhooks.html. Read 2026-09-16.
- 15. MailerSend — https://developers.mailersend.com/. Read 2026-09-16.
- 16. MailerSend — https://developers.mailersend.com/mcp. Read 2026-09-16.
- 17. MailerSend — https://www.mailersend.com/llms.txt. Read 2026-09-16.
Last checked 2026-09-16. 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.
Try it against your own mail
Create a key, verify a domain, and send your first email the same morning. The free plan does not expire.