/add-email-railway

Integrate email functionality using Nodemailer or Resend API. Set up SMTP configuration with environment variables. Create email templates using React Email for type-safe component-based emails. Implement send email API endpoint in Express. Add email validation and rate limiting. Handle delivery failures with retry logic using Bull queue. Implement email preview endpoint for testing. Configure transactional email service (SendGrid, Mailgun, or Resend). Provide usage examples for common email types. Test email sending in development with Ethereal Email. Reference devops-railway-agent for Railway deployment. Document email API and template creation workflow.