Resend
A modern email service for sending transactional and marketing emails at scale with developer-friendly APIs, SDKs, and analytics.
Resend is an open-source alternative to:
Resend: Email for developers
The best way to reach humans instead of spam folders. Deliver transactional and marketing emails at scale with Resend’s developer-first platform.
Key Features
- Developer-Friendly APIs & SDKs: Integrate seamlessly with Node.js, Python, Ruby, PHP, Go, Rust, Java, Elixir, .NET, REST, and SMTP. Supports frameworks like Next.js, Remix, Nuxt, Express, Hono, Redwood, Bun, and Astro.
- React Email Integration: Build beautiful email templates using React components with react-email, eliminating complex HTML table layouts.
- Test Mode: Simulate email events and API interactions without accidentally sending real emails to real people.
- Modular Webhooks: Receive real-time notifications for email delivery, opens, bounces, clicks, and spam complaints directly to your server.
- Audience Management: Group and control contacts with intuitive tools, import lists of any size, and gain full visibility into contact attributes.
- Broadcast Analytics: Track audience interactions with detailed insights to optimize email campaigns.
- Proactive Blocklist Tracking: Monitor DNS blocklists (e.g., Spamhaus) and generate removal requests automatically.
- Global Infrastructure: Reduce latency by sending emails from regions closest to your users, including North America, South America, Europe, and Asia.
- BIMI & VMC Support: Showcase your logo and company branding with Brand Indicators for Message Identification (BIMI) and Verified Mark Certificates (VMC).
- Managed Dedicated IPs: Get fully managed dedicated IPs with automatic warming and scaling based on your sending volume.
- Dynamic Suppression List: Comply with email regulations like CAN-SPAM by preventing repeated sends to uninterested recipients.
- IP & Domain Monitoring: Track DNS configurations for errors or regressions and receive alerts for deliverability issues.
- DNS Record Verification: Secure your email communication with DKIM, SPF, and DMARC to protect your sender reputation.
- Battle-Tested Infrastructure: Rely on a platform with reputable IPs used by trustworthy senders and distributed workloads across multiple IP pools.
Tech / Self-Hosting
Resend is a cloud-based email service and does not offer self-hosting options. It is designed for developers and businesses seeking a scalable, managed email solution with minimal setup and maintenance overhead.
- Pricing: Free tier available; paid plans for higher volumes and advanced features.
- Privacy & Compliance: GDPR compliant with EU data residency options. No AI dependency (noAi: false).