Resend
Resend is a developer-focused email API for sending transactional and marketing emails at scale.
Our verdict
Who it's for
Send transactional and marketing emails with a powerful API
Who should look elsewhere
Dedicated IPs only available on higher-priced plans
Pros
- +Clean, well-documented API with SDKs covering virtually every major language
- +Generous free tier for prototyping and small projects
- +React Email integration enables type-safe, component-based email templates
- +Pay-as-you-go overages prevent hard sending cutoffs
- +MCP server support makes it easy to integrate with AI agent frameworks
Cons
- −Dedicated IPs only available on higher-priced plans
- −Data retention limited on lower tiers
- −Marketing email features are less mature than some established platforms
- −No built-in drag-and-drop email editor for non-technical users
- −Team member limits are restrictive on lower tiers
Key features
- ✓RESTful API and SMTP relay for transactional and marketing email delivery
- ✓Official SDKs in 9 languages: Node.js, Python, Go, Ruby, PHP, Java, Elixir, Rust, .NET
- ✓React Email integration for building templates with React components
- ✓Batch sending and email scheduling with timezone support
- ✓Open tracking and link click tracking built into every plan
- ✓Inbound email processing to receive and parse incoming messages
- ✓Webhook endpoints for real-time delivery event notifications
- ✓Custom domain authentication with DKIM, SPF, and DMARC setup
- ✓MCP server integration for AI agents and automation workflows
- ✓Dedicated IP add-on for high-volume senders on Scale plan and above
Pricing
| Plan | Price | Billing | Notes |
|---|---|---|---|
| Free | $0 | month | 3,000 emails/month; 100 emails/day limit; 1 custom domain |
| Pro | $20 | month | 50,000 emails/month; No daily limit; $0.90 per 1,000 overage emails |
| Scale | $90 | month | 100,000 emails/month; No daily limit; $0.90 per 1,000 overage emails |
| Enterprise | — | month | Unlimited emails; Flexible custom domains; Flexible team members |