@react-email/components TypeScript Cheatsheet: Every Prop, Type, and Pattern
Complete TypeScript reference for @react-email/components. Props tables, typed layout and content examples, custom template patterns, and fixes for common type errors.
Supabase Auth Emails with React Email and Resend: Replace Default Templates with Custom Designs
Use Supabase's Send Email auth hook to replace default auth emails with branded React Email templates sent through Resend. Full Edge Function setup guide.
Resend vs Sequenzy vs SendGrid vs Amazon SES: Choosing an Email Provider for Next.js
An engineering comparison of Resend, Sequenzy, SendGrid, and Amazon SES for email in Next.js - covering API design, React Email integration, marketing automation, deliverability, pricing at scale, and how to build a provider abstraction layer.
Stripe Webhook Emails in Next.js: Payment Receipts and Recovery Flows with React Email
Stripe fires events but most SaaS apps never email the customer. Learn how to build webhook-driven payment receipts, failed payment recovery emails, and refund notifications with Next.js App Router and React Email.
CI/CD Pipeline for Email Templates: Automated Testing and Visual Regression
Stop shipping broken emails. Build a CI pipeline with TypeScript checks, HTML snapshot tests, Playwright visual regression, and automated preview deployments for React Email templates.
Email Analytics: Tracking Opens, Clicks, and Conversions in Next.js
Build email analytics into your Next.js app: tracking pixels, click-through redirects, conversion attribution, and privacy-first patterns. No third-party SDK required.
React Email in Monorepos: Shared Templates Across Multiple Apps
Stop duplicating email templates across workspaces. Build a shared email package with brand variants, template inheritance, and environment-aware rendering for monorepo codebases using npm/pnpm/Yarn workspaces or Turborepo.
Email Template Caching Strategies: Cut Render Times from 500ms to 50ms at Scale
Production-ready caching strategies for React Email templates: static pre-rendering, Redis caching, LRU caches, background pre-generation, and cache invalidation patterns that prevent stale sends.
Email A/B Testing Infrastructure: Production Patterns for Testing Subject Lines, Content, and CTAs
Build production-ready A/B testing for transactional emails: deterministic variant assignment, event tracking, statistical significance, and clean rollout patterns. Test subject lines, CTAs, content, and send timing without breaking your flow.
Email Template Performance Optimization: 5 Strategies That Cut HTML Size by 50% and Speed Up Sends
Optimize React Email templates for speed and efficiency. Reduce HTML size by 40-60%, cut render time in half, shrink images, and optimize CSS inlining. Includes performance testing patterns and caching strategies for high-volume SaaS products.
Email Rate Limiting & Throttling: 5 Production Patterns That Prevent Abuse and ESP Suspensions
Stop email abuse, accidents, and ESP suspensions with production-ready rate limiting. Per-user limits, global throttling, IP-based protection, deduplication, and circuit breakers that prevent cascading failures.
Email Template Organization: File Structure Patterns That Scale from 5 to 50 Templates
Stop copy-pasting components between email templates. Learn file structure patterns, component organization, preview data management, and registry patterns that scale from startup to enterprise.
Email Environment Patterns: How to Handle Dev/Staging/Prod Without Spamming Real Users
Stop accidentally sending test emails to production users. Email gating, subject tagging, local SMTP sinks, test account routing, rate limiting, and audit logging for bulletproof environment handling.
Email Debugging Patterns: Trace IDs, Logs, and Snapshots for Production React Email
Stop debugging emails in the dark. Use trace IDs, render validation, snapshots, delivery webhooks, and debug mode to turn email incidents into traceable, fixable issues.
Email Prop Validation: 3 Layers That Catch Bad Data Before It Sends
Stop shipping emails with undefined URLs and $NaN totals. Use schema validation (Zod), template-level guards, and pre-send smoke tests to catch runtime failures before they reach production.
Email Queue Patterns for Next.js: Background Jobs, Rate Limiting, and Retry Logic
Build production-ready email queues for Next.js: in-memory patterns for simple apps, Redis + BullMQ for scale, serverless cron for Vercel, plus monitoring, testing, and dead letter queues.
Dynamic Content Patterns in React Email: 5 Patterns That Handle Real-World Data
Master conditional rendering, dynamic lists, fallback chains, variant switching, and progressive disclosure in React Email. Practical patterns for handling messy production data without template chaos.
Error Handling for React Email: Production Patterns That Prevent Silent Failures
Defensive error handling patterns for React Email: validation before render, retry logic, structured logging, text fallbacks, and user feedback that prevents silent failures.
Composable React Email: Component Patterns That Scale
Five reusable component patterns for React Email codebases that don't turn into copy-paste chaos: base layouts, typed primitives, conditional rendering, style tokens, and preview data factories.
Type-Safe Email Templates with TypeScript and @react-email/components
Use TypeScript generics, typed props, and Zod schemas with @react-email/components to catch email template errors at compile time. Patterns for React Email + Next.js.