Used For

• +**Your password reset emails end up in spam folders** → Resend handles sender reputation so emails hit inboxes reliably
• +**You're hardcoding email templates in your app and designers hate you** → Visual template editor with real-time collaboration and version rollback
• +**Users sign up but never get confirmation emails** → Webhook system tells you exactly what bounced, delivered, or got opened
• +Connects to other tools through one clean interface instead of wrestling with SMTP configuration
• +Handles both automated app emails and marketing campaigns from the same dashboard

Best For

• >Building a SaaS product and need signup confirmations that actually send
• >Your current email setup breaks every other week and you're tired of emergency fixes
• >Small team that wants both transactional emails and newsletters without juggling multiple tools

Not For

• -Large enterprises needing compliance features or on-premise deployment — this is cloud-only with basic security
• -Marketing teams without developers — you'll need someone who can write code to actually send emails
• -High-volume senders doing millions of emails monthly — AWS SES is way cheaper at massive scale

Pairs With

• *Supabase (handles user accounts while Resend sends the welcome emails automatically)
• *Auth.js (for magic link logins that actually get delivered to users' inboxes)
• *Next.js (where your app lives and triggers the email sends through Resend's SDK)
• *Stripe (sends payment confirmations and invoice emails through Resend)
• *Vercel (hosts your app that calls Resend's email service)
• *PostgreSQL (stores user data and email preferences that feed into Resend's audience management)

The Catch

• !The $20/month base price jumps fast with overage fees at $0.50 per 1,000 emails if you hit spikes
• !Marketing features exist but they're basic — Mailchimp has way better campaign tools and automation
• !Inbound email handling just launched in 2025, so expect some rough edges if you need to receive emails

Bottom Line

Email that takes 15 minutes to set up instead of 15 hours fighting with SMTP servers.