- Free allowance
- 3,000 emails/month and 100/day, 3 domains, 3 inboxes, 30-day retention
- Verdict
- caveatusable, with a named limit or an unprobed read path
- Cost
- free tier
- Identity
- emailno card, no phone
- Binding limit
- request-rate100 emails per UTC calendar day, resetting at 00:00 UTC; 10 requests per second per account; received email counts against both the daily and the monthly quota
- Evidence
- documented2 sources; a first-party page was read and the sentence quoted
- Freshness
- stale on 2026-11-22checked 2026-10-22 (live); stale on 2026-11-22
| Free tier | 3,000 emails/month and 100/day, 3 domains, 3 inboxes, 30-day retention unit requests; metered on request-count |
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| Price | none stated |
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| Limits | - request-rate (binding) 100 emails per UTC calendar day, resetting at 00:00 UTC source
- request-rate (binding) 10 requests per second per account source
- request-rate (binding) received email counts against both the daily and the monthly quota source
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| Binding | request-rate 100/day rather than 3,000/month: the 30:1 ratio means the monthly figure cannot be spent in a burst, and the page states the UTC boundary explicitly. |
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| Identity | email an account and a verified sending domain; no card on the free plan |
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| Egress | not applicable: an outbound sender |
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| Per-object cap | not applicable: a message count rather than an object |
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| Retention | logs kept 30 days; inbound messages count against the same quota |
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| Interface | rest https://api.resend.com/emails |
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| Tooling | curl, any HTTP client |
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| Composes with | the outbound half of the free mail chain: unlimited inbound from Cloudflare Email Routing or Forward Email, then 100 messages a day out through Resend. The daily cap is the scarce link. |
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| Reliability | sending pauses above a 4% bounce rate, which is a reputation cap rather than a volume cap |
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| Notes | A spike at 23:50 UTC gets 100 more at midnight, which is the one burst the boundary allows. |
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| Evidence note | documented no message was sent, so no delivery is proved. The submission path was probed: smtp.resend.com:587 answered 250, STARTTLS completed, and AUTH LOGIN returned 334 |
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| Parsed numbers | - has-free-tier 1
- request-rate 10 requests
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