Resend delivers, and Mimeo does everything else: the list, flows, sequences, broadcasts, unsubscribe headers and suppression. Connect your Resend API key, verify your domain, and set up webhooks so bounces and complaints come back to your Mimeo.
What Mimeo does with Resend
- Everything but delivery. Resend adds nothing to the email, so Mimeo sets the List-Unsubscribe headers, the unsubscribe page, suppression and pacing itself.
- Checks the domain before it sends. Mimeo reads your verified domains from Resend and holds an email from an unverified domain in the queue.
- Paces large sends. Mimeo keeps to Resend's rate limit and your own sending pace, whichever is lower.
- Brings bounces and complaints back. Resend's webhooks report each bounce and complaint, and Mimeo suppresses the person at send time.
Setting it up
- Verify your sending domain in Resend and wait for its DNS to check out.
- In Mimeo, open Settings → Provider and choose Resend. Paste a Full access API key and a webhook secret, then Save & connect.
- Press Verify connection. It reports which domains Resend has verified.
- Connect the same domain under Settings → Domains & senders with one CNAME record, so the links in your email ride your domain too.
- Add the webhook URL Mimeo shows in Resend.
The full reference is Resend setup. A step-by-step walk-through is in send newsletters and automations through Resend.
What Resend costs
Resend bills its email API by emails sent a month. On its pricing page on November 9, 2026, the Pro plan was $35 a month for 100,000 emails. Resend's separate marketing plans bill by contacts, from $80 a month at 10,000; with Mimeo you don't need them, because Mimeo holds your list. Check Resend's pricing for your volume, or try the email platform cost calculator.
Questions
Do I need Resend's marketing plan?
No. Mimeo sends through Resend's email API, so your list, flows and broadcasts live in Mimeo, not in Resend.
Why does Mimeo need a Full access API key?
A key with Sending access only can't read your verified domains, so Verify connection fails and Mimeo's send-time domain check would have nothing to check against.
What happens if I skip the webhooks?
Bounces and complaints at Resend never reach your Mimeo. Mimeo doesn't read Resend's suppressions API, so webhooks are the only way they arrive.
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