What are best practices for transactional emails?
Send asynchronously (don't block responses), handle failures gracefully (log errors but don't fail the request), use email queues for high volume, don't send to bounced addresses, include unsubscribe links for notifications, rate limit per user, and test in sandbox mode first.
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More FAQs in Transactional Emails in Node.js Password Reset, Welcome, and Notification Emails
After creating the user, call sendEmail with the welcome template. Don't await the email use fire and forget (.catch for error logging) so the user gets their response immediately. The email sends in the background.
Generate a random token (crypto.randomBytes), hash it, save to user with 1-hour expiry. Send an email with a reset link containing the raw token. On reset, verify the hashed token and expiry, update the password, and clear the token.
No. Don't block the HTTP response on email sending. Use fire and forget (sendEmail().catch(err => console.error(err))) so the user gets their response immediately. The email sends in the background. For critical emails, use a queue (Bull, SQS).
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