AI recommendation board

What AI recommends for Transactional email APIs

How AI answers when a developer asks which transactional email API to use to send email from a SaaS product. We asked ChatGPT, Claude, Gemini and Perplexity the same five buyer questions and counted, from their own answers, who gets named, who gets recommended first, and who is left out. Every number links to the verbatim answer.

Last scanned 2026-06-29How we measured this
CompanyNamed inRecommended firstState
Postmarkincumbent19/2019/20Owns it
Mailgunincumbent18/2018/20Owns it
Amazon SESincumbent15/2015/20Owns it
SendGridincumbent15/2015/20Owns it
Resend8/208/20Owns it
Brevo4/204/20Contested
MailerSend2/202/20Contested
Mailtrap2/202/20Contested
Loops0/200/20Contested

Sorted by how many of the 20 buyer conversations named each company, then by how often it was named first. Counts only, no score.

Want your own category?

This board is one buyer category, measured the same way for every company. You can run the same scan for your own category.

We report what AI said, verbatim, with model versions and scan dates. We make no claim that any company is good or bad, only that AI answered a stated question a certain way. If you work at a company on this board and want a correction or removal, email gissur@qualitas.is. Canonical: https://www.bersyn.com/recommends/transactional-email-apis