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Rasket vs SendGrid

Both send email over a REST API. Every row below was read from Rasket's own pages and SendGrid's own pages on 2026-09-16, and every one of them links to the page it came from.

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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.
SendGrid
SendGrid is Twilio's email product: an API and an SMTP service with seven official libraries, sold as Email API plans, with its campaign tooling bought as a second subscription.

Key takeaways

  • Extra emails, per 1,000 — Rasket: $0.60. SendGrid: $1.30.
  • Entry paid plan — Rasket: $20 a month for 50,000 emails. SendGrid: $19.95 a month for 50,000 emails.
  • Free plan — Rasket: 3,000 emails a month, 100 a day, 3 domains. SendGrid: No free plan — a 60-day trial of 100 emails a day.
  • Inbound email — Rasket: Yes. SendGrid: On the Pro and Premier plans.
  • Official SDKs — Rasket: Node.js and Python. SendGrid: C#, Go, Java, Node.js, PHP, Python and Ruby.

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.

Rasket and SendGrid compared, row by row
CriterionRasketSendGrid
Inbound emailYes Rasket, source 1Receive at your own domain on every plan, delivered as a signed webhook.On the Pro and Premier plans SendGrid, source 13The pricing table lists the Inbound Parse Webhook against Pro and Premier only.
Transactional and broadcasts on one planYes Rasket, source 2A broadcast travels the same send pipeline as a password reset, on the same plan and the same key.No — campaigns are a separate purchase SendGrid, source 13The page says Marketing Campaigns and the Email API have to be bought separately.
Signed webhooksYes Rasket, source 3Yes SendGrid, source 14Their Signed Event Webhook.
Replay a webhook eventYes 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 SendGrid, source 14
Idempotent sendsYes Rasket, source 4An Idempotency-Key is remembered for 24 hours.Not published SendGrid, source 15
Versioned templatesYes Rasket, source 5Published versions with typed variables; every send records the version it used.Not published SendGrid, source 15
AutomationsYes Rasket, source 6In Marketing Campaigns, bought separately SendGrid, source 13
MCP serverYes Rasket, source 7An HTTP MCP server with seven toolsets, plus a setup skill.Yes SendGrid, source 16Twilio's MCP server, over the Twilio documentation and API.
Markdown docs and llms.txtYes Rasket, source 8Markdown at every docs URL, with llms.txt and llms-full.txt.Yes SendGrid, source 15A .md suffix on a docs URL returns Markdown, and llms.txt indexes the set.
Official SDKsNode.js and Python Rasket, source 9C#, Go, Java, Node.js, PHP, Python and Ruby SendGrid, source 17
Free plan3,000 emails a month, 100 a day, 3 domains Rasket, source 10No free plan — a 60-day trial of 100 emails a day SendGrid, source 13
Entry paid plan$20 a month for 50,000 emails Rasket, source 10$19.95 a month for 50,000 emails SendGrid, source 13The Essentials 50K plan.
Extra emails, per 1,000$0.60 Rasket, source 10The rate steps down to $0.25 as the Scale ladder climbs.$1.30 SendGrid, source 13The page prices extra emails at $0.0013 each on Essentials 50K, which is $1.30 per thousand.
Data retention30 days on the self-serve plans Rasket, source 10Custom retention on a Custom plan.3 days of searchable activity, 7 on Pro and Premier SendGrid, source 13
Dedicated IPAn add-on on Scale Rasket, source 10One included on Pro and Premier SendGrid, source 13The page says more can be added on; it does not state their price.
SMTP relayNo Rasket, source 11Sending is the REST API, the SDKs and the MCP server. There is no relay to point a mail client at.Yes SendGrid, source 13
DKIM key size2048-bit, one key per domain Rasket, source 12Not published SendGrid, source 15
Best forDevelopers who want sending, receiving and broadcasts behind one API keyTeams already inside Twilio who want email on the same account

Where SendGrid wins

SendGrid ships seven official libraries to our two, so a C#, Java, Go, PHP or Ruby service has a maintained client from them today. They run an SMTP service, which we do not, and their Pro and Premier plans include a dedicated IP in the price where ours is an add-on. If your company already bills through Twilio, one account and one invoice for email, SMS and voice is a real advantage no feature row here captures.

The verdict

The rows that decide this one are the free plan and the shape of the bill. SendGrid's entry is a 60-day trial rather than a plan you can stay on, campaigns are a second subscription, and searchable activity is three days on Essentials against thirty on every self-serve Rasket plan. Extra email is $1.30 a thousand against $0.60. Choose SendGrid when the rest of your stack is Twilio or you need a language we do not have a client for; choose Rasket when you want a free plan that does not expire, inbound mail without moving up two tiers, and one plan covering transactional and broadcast mail.

Frequently asked questions

Is Rasket a good alternative to SendGrid?

It is, for most of what the Email API plans do. Rasket sends over a REST API, signs webhooks and lets you replay them, receives inbound mail on every plan, and keeps thirty days of history on the self-serve plans against three on Essentials. What Rasket does not have is an SMTP relay or SendGrid's seven client languages, and it is not part of Twilio, so shared billing with SMS and voice is not on the table.

Does SendGrid include inbound email?

SendGrid: On the Pro and Premier plans. The pricing table lists the Inbound Parse Webhook against Pro and Premier only. 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 the two entry plans are within a rounding error: $19.95 for Essentials 50K, $20 for Rasket Pro. Past the quota the gap opens — $1.30 per extra thousand against $0.60 — and the plans are not carrying the same things, because inbound mail arrives on SendGrid's Pro tier and on every Rasket plan, and campaigns are a separate SendGrid subscription.

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 SendGrid to Rasket?

Add your domain in Rasket, publish the DKIM, SPF and DMARC records we generate, and keep sending through SendGrid until verification passes. Then swap the call: POST /emails takes the same pieces as their mail send, and the key moves to an Authorization header. Dynamic templates are rewritten once and published as a version; Event Webhook endpoints become Rasket webhooks with their own signing secret, and a failed delivery can be replayed from the dashboard while you finish the handler.

Which is better for AI agents?

Both publish for agents. Twilio runs an MCP server across its documentation and API and serves Markdown at its docs URLs with an llms.txt index, and Rasket publishes an MCP server with seven toolsets, a setup skill, Markdown twins and llms.txt. The difference is what the tools reach: Twilio's server spans the whole Twilio API surface, where Rasket's is email and only email, which is a smaller thing for an agent to get wrong.

Sources

  1. 1. Rasket — http://localhost:3000/features/receiving. Read 2026-09-16.
  2. 2. Rasket — http://localhost:3000/features/broadcasts. Read 2026-09-16.
  3. 3. Rasket — http://localhost:3000/features/webhooks. Read 2026-09-16.
  4. 4. Rasket — http://localhost:3000/docs/idempotency. Read 2026-09-16.
  5. 5. Rasket — http://localhost:3000/features/templates. Read 2026-09-16.
  6. 6. Rasket — http://localhost:3000/features/automations. Read 2026-09-16.
  7. 7. Rasket — http://localhost:3000/features/agents. Read 2026-09-16.
  8. 8. Rasket — http://localhost:3000/llms.txt. Read 2026-09-16.
  9. 9. Rasket — http://localhost:3000/about. Read 2026-09-16.
  10. 10. Rasket — http://localhost:3000/pricing. Read 2026-09-16.
  11. 11. Rasket — http://localhost:3000/features/email-api. Read 2026-09-16.
  12. 12. Rasket — http://localhost:3000/features/domains. Read 2026-09-16.
  13. 13. SendGrid — https://www.twilio.com/en-us/products/email-api/pricing. Read 2026-09-16.
  14. 14. SendGrid — https://www.twilio.com/docs/sendgrid/for-developers/tracking-events/event. Read 2026-09-16.
  15. 15. SendGrid — https://www.twilio.com/docs/llms.txt. Read 2026-09-16.
  16. 16. SendGrid — https://www.twilio.com/docs/ai/mcp. Read 2026-09-16.
  17. 17. SendGrid — https://www.twilio.com/docs/sendgrid/for-developers/sending-email/libraries. 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.

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