Prompt
What should I use if I need transactional email from my product?
Latest observation
Oct 10, 2026
OpenAI APIWeb search: off
If you need transactional email from your product, use a transactional email service provider rather than a normal marketing tool.
Good options:
- Postmark — great deliverability and simple for transactional email
- SendGrid — popular, flexible, broader feature set
- Mailgun — good APIs and developer tools
- Amazon SES — very cheap, but more setup/ops work
- Resend — modern developer-friendly option, especially for app email
What to look for
- High deliverability
- Fast API/send performance
- Webhooks for bounces, opens, complaints
- Templates
- Domain authentication support: SPF, DKIM, DMARC
- Easy logs/debugging
My quick recommendation
- If you want the easiest solid choice: Postmark
- If you want lowest cost at scale: Amazon SES
- If you want modern DX: Resend
If you want, I can recommend the best one based on your stack, budget, and email volume.