Master Resend with our step-by-step tutorial, detailed feature walkthrough, and expert tips.
Sign up and verify your sending domain Install Resend SDK in your agent application Create React email templates for common use cases Integrate API calls into agent communication workflows Set up webhooks to track email delivery and engagement
💡 Quick Start: Follow these 1 steps in order to get up and running with Resend quickly.
Explore the key features that make Resend powerful for messaging & communication workflows.
Minimalist API design: send email with a single POST request containing from, to, subject, and content. Supports HTML, plain text, React components, and attachments. Response includes message ID for tracking.
An AI agent that sends analysis results via email with a 3-line integration — no SMTP setup, no complex configuration.
Build email templates as React components using @react-email/components. Templates are rendered to email-compatible HTML at send time with responsive design, cross-client compatibility, and component reuse.
Building a weekly AI-generated newsletter template with React components that renders consistently across Gmail, Outlook, and Apple Mail.
Guided domain configuration with automatic SPF, DKIM, and DMARC record generation. The dashboard walks you through DNS setup with verification checks and troubleshooting guidance.
Setting up email sending for a new domain in 10 minutes with step-by-step DNS configuration guidance instead of deciphering authentication documentation.
Real-time webhooks for email lifecycle events: sent, delivered, opened, clicked, bounced, and complained. Events include message metadata and timestamps for correlation with agent workflows.
An agent that escalates to a phone call if a critical email notification hasn't been opened within an hour.
Send up to 100 emails in a single API call with per-recipient personalization. Each email can have different content, subject lines, and metadata while sharing a single API request.
An AI agent that generates personalized weekly reports for 50 team members and sends them all in a single batch request.
Manage multiple sending domains within a single account with separate authentication and analytics per domain. Useful for multi-tenant applications or agents serving multiple brands.
A SaaS platform where AI agents send emails on behalf of different customer domains with proper authentication for each.
Yes, many production applications use Resend. However, it's younger than SendGrid or Postmark with a shorter track record at very high scale. For most applications, Resend's reliability is excellent. For mission-critical enterprise email where a decade of deliverability data matters, consider more established alternatives.
Resend has dramatically better developer experience — cleaner API, better documentation, modern dashboard, React email support. SendGrid has more features (marketing email, inbound parse, email validation), a longer track record, and better deliverability infrastructure at scale. Choose based on whether DX or feature completeness matters more.
Yes. React Email is optional. Resend's API accepts plain HTML and text content. The React integration is a bonus for React teams but not required. You can use Resend with any framework or language through the REST API.
Good, with proper domain authentication. Resend handles SPF, DKIM, and DMARC configuration. Inbox placement rates are competitive with other major providers. For the highest deliverability, ensure proper domain warmup and authentication — Resend's dashboard guides you through this.
Now that you know how to use Resend, it's time to put this knowledge into practice.
Sign up and follow the tutorial steps
Check pros, cons, and user feedback
See how it stacks against alternatives
Follow our tutorial and master this powerful messaging & communication tool in minutes.
Tutorial updated March 2026