Reviewed by Alexis Morain · Updated July 11, 2026
The most pleasant sending API for modern developers, with React Email and a decent free plan, less mature than established players on very large volumes.

Resend is a modern email sending API, built by and for developers. Launched in 2023, it quickly gained traction thanks to a polished experience: clear documentation, clean SDKs, and native integration with React Email to compose emails as components.
You send transactional and marketing emails from your application through a simple API or SMTP. Resend handles domain authentication (SPF, DKIM), event webhooks, contact and audience management, and provides React Email, an open source library for building templates in JSX. Deliverability is solid and onboarding is fast, making it a favorite among modern technical teams and new projects.
Compared to SendGrid, older and heavier, Resend bets on simplicity and developer experience. Compared to Postmark, very solid on transactional email, it adds a more modern approach with React Email. For a recent project wanting a clean API with no friction, it's often the first choice; established players keep the edge on very large historical volumes.
Younger than its competitors, it has a shorter deliverability track record at very large volumes. Marketing (audiences) is billed separately, per contact, and advanced features remain less developed than at established suites.
Modern API
Simple transactional and marketing sending
React Email
Templates as open source JSX components
Webhooks
Real-time deliverability events
Audiences
Contact management for marketing
Resend has a free plan of 3,000 emails per month (capped at 100 per day, 1 domain). The Pro plan starts at $20/month for 50,000 emails (no daily cap, up to 10 domains), the Scale plan is $90/month for 100,000 emails (Slack support, dedicated IP possible), Enterprise on request. Marketing via audiences is billed separately, based on contact count.
Free plan / trial
Free plan: 3,000 emails per month, capped at 100 per day with a single verified domain, 30-day log retention, and React Email included.
Free
3,000 emails/month · 100 emails/day · 1 domain, React Email
$0
Pro
50,000 emails/month · No daily cap · Up to 10 domains
$20 per month
Scale
100,000 emails/month · Slack support · Dedicated IP possible
$90 per month
Enterprise
Very high volumes · Custom SLA · Dedicated IP pools
Custom pricing
Pricing verified on July 11, 2026
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