Resend alternatives, by the reason you're leaving
The right Resend alternative depends on why you're switching. For the lowest cost at volume, use Amazon SES directly or a service that passes it through cheaply. To self-host, use useSend or Plunk. For transactional-only email with a strong focus on delivery, use Postmark. If you want a full suite with marketing tools, SendGrid and Mailgun are the established options.
We build SendForAI, one of the options below, so we're biased. Every number on this page comes from each provider's published pricing, and there's a section on where Resend is still the better choice.
Pick by the reason you're leaving
| If your reason is | Look at | Why | Watch out for |
|---|---|---|---|
| It costs too much at volume | Amazon SES directly, or a service that passes SES through cheaply (useSend, SendForAI) | At 1M emails a month Resend is $650. Raw SES is about $104, useSend about $400, SendForAI about $114. | Raw SES gives you a sending endpoint, nothing else: bounce handling, suppression, unsubscribes and logs are yours to build. |
| You want to self-host or own the code | useSend, Plunk (AGPL-3.0), Postal | Open source, and you can run them on your own infrastructure. | You operate the servers, and you still need a sending provider (usually SES) underneath. |
| Transactional only, inbox placement first | Postmark | Built around transactional email; plans start at $15 for 10,000. | Overage is $1.20 to $1.80 per 1,000 at the 10,000 tiers, and the free plan is 100 emails a month. |
| Newsletters and transactional on one bill | useSend, Plunk, SendForAI | Resend prices broadcasts on a separate plan by contacts. These charge for emails sent, with no per-contact pricing. | Check unsubscribe handling and approval workflows before moving a large list. |
| Inbound email | Stay on Resend, or Mailgun | Resend already includes inbound email on every plan, so this alone isn't a reason to switch. Mailgun includes an inbound route even on its free plan. | Inbound mail on Resend counts against your transactional quota. |
| EU data residency | Check your current region first | Resend lets you choose the region you send from on every plan. Confirm what your requirement actually covers (sending, logs, support access) before migrating. | Many alternatives send through US infrastructure by default. |
| An AI agent runs your email | SendForAI | No API keys (the domain's DNS record is the identity), the cost on every response, spend caps, broadcasts that wait for a human to approve, and an MCP server. | Early access: sending to arbitrary recipients is pending Amazon's production approval, and payments are in test mode. |
What each alternative costs
Monthly cost for transactional email at four volumes, using the cheapest published plan or rate that covers each one. Where a provider doesn't publish a price at that volume, the table says so instead of guessing.
| Provider | 10,000 / mo | 50,000 / mo | 100,000 / mo | 1,000,000 / mo | Pricing basis |
|---|---|---|---|---|---|
| Resend | $20 | $20 | $35 | $650 | Free 3,000/mo; Pro $20 for 50,000 |
| SendGrid | $19.95 | $19.95 | $34.95 | $799 | 60-day trial; Essentials from $19.95 |
| Mailgun | $15 | $35 | $75 | $700 | Free 100/day; Basic $15 for 10,000 |
| Postmark | $15 | $55 | $115 | $775 | Free 100/mo; Basic $15 for 10,000 |
| useSend (cloud) | $10 | $20 | $40 | $400 | Free 3,000/mo; $10 minimum, $0.40 per 1,000 |
| Plunk (cloud) | $10 | $50 | $100 | $1,000 | Free 1,000/mo; $1 per 1,000 |
| Amazon SES (raw) | $1.04 | $5.19 | $10.38 | $103.84 | $0.10 per 1,000; you build the rest |
| SendForAI | $5 | $9.40 | $14.90 | $113.90 | $5 in months you send (10,000 incl.), then $0.11 per 1,000 |
Monthly USD before tax, read November 7, 2026. SendGrid is the published plan that covers the volume, since it doesn't publish Email API overage rates. Mailgun and Postmark are the cheaper of a tier plus its published overage or the next tier up. Raw SES includes message data at 32 KB per email but excludes everything you would build yourself. Full Resend breakdown: Resend pricing. SES detail: Amazon SES pricing.
The alternatives, one by one
SendGrid
The longest-running option, now part of Twilio. New accounts get a 60-day free trial at 100 emails a day. Essentials starts at $19.95 for 50,000 emails and Pro at $89.95 for 100,000, with dedicated IPs, subusers and single sign-on on Pro. Marketing email is a separate product. See SendGrid pricing, SendGrid alternatives or our Resend vs SendGrid comparison.
Mailgun
Free at 100 emails a day with one inbound route. Basic is $15 for 10,000, Foundation $35 for 50,000 or $75 for 100,000, and Scale runs from $90 for 100,000 to $700 for 1 million. A good fit if you want inbound routing and a mature API without building on SES yourself.
Postmark
Transactional-first. The free Developer plan is 100 emails a month. Basic, Pro and Platform start at $15, $16.50 and $18 for 10,000 emails, with overage from $1.80 down to $1.20 per 1,000. Basic runs $55 for 50,000 and $775 for 1.5 million. Dedicated IPs start at $50 a month for senders above 300,000 emails.
Amazon SES
The infrastructure underneath many of these services, at $0.10 per 1,000 emails. You get delivery and raw events; dashboards, suppression handling, unsubscribe pages and templates are up to you. Check which SES plan your account is on before you budget.
useSend
Open source and built on SES. The hosted free tier sends 3,000 emails a month. Paid is a $10 monthly minimum, then $0.40 per 1,000 transactional and $1 per 1,000 marketing emails, with no charge for storing contacts.
Plunk
Open source (AGPL-3.0) with a hosted version: free for 1,000 emails a month, then $1 per 1,000 with no base fee. Includes broadcasts, workflows and inbound email, and unlimited contacts on every plan.
SendForAI
Built for AI agents. $0 to build, $5 in months you send to the outside world (10,000 emails included), then $0.11 per 1,000, paid from a prepaid balance. One key covers up to 50 domains. It's in early access: until Amazon approves production sending, it can only reach verified addresses, and payments run in test mode. Full pricing.
Where Resend is still the better choice
- Its free plan reaches anyone. 3,000 emails a month to any address. SendForAI's free tier only reaches your own domains, and Postmark's is 100 a month.
- More of the product is built. React Email, inbound email, inboxes, automations and 30 days of logs come on every plan. Several cheaper alternatives, SendForAI included, have no template tooling or inbound email.
- It's generally available. Resend sends to anyone today. Newer options, SendForAI among them, are still waiting on production approvals or running payments in test mode.
If none of the reasons in the first table applies to you, staying on Resend is a reasonable answer.
Resend alternatives FAQ
Is there a free alternative to Resend?
Several have free tiers: useSend (3,000 emails a month, 100 a day), Plunk (1,000 a month), Mailgun (100 a day), Postmark (100 a month), and SendGrid (a 60-day trial at 100 a day). Resend's own free plan, 3,000 a month, is as generous as any of them.
Is there an open source Resend alternative?
Yes. useSend and Plunk are open source email platforms you can self-host (Plunk is AGPL-3.0), and Postal is an open source mail server. Self-hosting removes the per-email markup but not the work: you run the servers and usually still send through Amazon SES.
What is the cheapest Resend alternative?
Amazon SES on its own, at $0.10 per 1,000 emails. Of the managed options in the table, useSend and SendForAI are the cheapest at most volumes. At 10,000 a month the managed options cluster between $5 and $20.
Mailgun vs Resend: which is cheaper?
At published prices Mailgun is $15 for 10,000, $35 for 50,000, $75 for 100,000 (Foundation) and $700 for 1 million (Scale); Resend is $20, $20, $35 and $650 at the same volumes. Mailgun is cheaper at 10,000 if you need a paid plan; Resend is cheaper from 50,000 up.
Sources and method
Read November 7, 2026: Resend, SendGrid (Twilio), Mailgun, Postmark, useSend, Plunk, Amazon SES. Costs are for transactional email only and use the cheapest published plan or rate covering each volume. Prices change; spot an error? hello@sendforai.com.