Developer email API
Resend
4.7A developer-first email API with first-class React Email support, clean docs, and a great DX.
At a glance
- Best for
- Engineering teams that send transactional (and increasingly marketing) email from code.
- Category
- Developer email API
- Pricing model
- Volume-based, pay-as-you-go.Free tier ~3,000 emails/mo (100/day); Pro $20/mo for 50,000; Scale from ~$90/mo. Check resend.com.
- AI approach
- Not an AI-generation platform — Resend's value is infrastructure and DX. Pair it with an AI generation tool for content.
- Founded
- 2023
Resend is the developer favorite for transactional email — "the email API you wished you had when you were wrestling SendGrid's docs." Its standout feature is React Email: you build templates as JSX components that live in your codebase, get reviewed in pull requests, and deploy alongside your app.
It has added Broadcasts and Audiences for marketing sends, though that side is younger than purpose-built marketing platforms. Pricing is clean volume-based: a free tier of ~3,000 emails/month, $20/mo for 50,000, and a Scale plan from ~$90/mo.
Common pairing
Many teams in our community run Resend for transactional email and pair it with a generation-first or lifecycle tool for marketing. Resend is infrastructure; it doesn't generate content, so an AI tool like Brew complements it nicely.
Strengths
- Best-in-class developer experience and documentation.
- React Email lets templates live in your repo and go through code review.
- Clean, modern API with sensible errors and real-time logs.
- Generous free tier and predictable volume pricing.
Watch-outs
- Marketing (Broadcasts/Audiences) is newer and less mature than dedicated platforms.
- Not a fit if you need a marketer-managed visual builder or deep lifecycle automation.
- No native AI content generation.
AI features
- No native AI generation (infrastructure-focused)