Resend
Developer-first email API from the React Email team: the most modern DX of the group, built for JS/TS-native stacks.
Resend is the newest platform of the group and it shows in the product design: React Email templating (compose emails as React components), native integrations across the modern JS deployment stack, and a genuinely usable free tier for small production use rather than testing alone.
Pros
- +Best free tier for actual small-scale production use (3,000/mo)
- +Modern DX: React Email components, native Next.js/Vercel/Supabase/Cloudflare Workers/Lambda integration
- +Every tier including free gets API, SMTP relay, inbound email, batch sending, DKIM/SPF/DMARC
Cons
- −Newest/least track record of the group
- −Retention windows are short relative to price (7 days on the $20 Pro tier)
- −Overage pricing needs modeling if traffic is spiky
Pricing
Free
$0/mo · annual commitment
Month-to-month: not published
- ✓3,000 emails/mo, 1 domain
Pro
$20/mo · annual commitment
Month-to-month: not published
- ✓50,000 emails/mo
Pro 100k
$90/mo · annual commitment
Month-to-month: not published
- ✓100,000 emails/mo
Specifications
| Rating | 3.9 |
| Features | |
|---|---|
| Automation Builder | No |
| Dedicated IP | No |
| A/B Testing | No |
| Source IP allow/deny* | No |
*Source IP allow/deny listing: whether you can restrict which IP addresses may use your sending credentials (SMTP/API), checked against each vendor’s official documentation, 2026-09-01. SendGrid, Mailgun, SMTP2GO and SparkPost offer a native allowlist (no denylist); Amazon SES has no native switch but achieves both allow and deny shapes through IAM policy conditions. Postmark, Resend and Mailjet document no such control.
Researched and drafted with AI assistance; reviewed and approved by Tim Meredith. How we use AI
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