Transactional email APIs · Postmark
Postmark alternatives, according to AI assistants
The Transactional email APIs that ChatGPT, Claude, Gemini and Perplexity name most, other than Postmark. Ranked by score, with the question each one wins most often.
- 1.Resend61
Named in 4 of 4 answers to "What are the best transactional email APIs?"
- 2.Amazon SES59
Named in 3 of 3 answers to "What's the cheapest way to send transactional email at scale?"
- 3.SendGrid47
Named in 3 of 3 answers to "What's the best email API that also handles marketing campaigns?"
- 4.Mailgun41
Named in 3 of 3 answers to "What's the best email API for a European company that needs EU data hosting?"
- 5.Brevo23
Named in 3 of 3 answers to "Which email API has the best free tier?"
- 6.Mailtrap13
Named in 3 of 3 answers to "What's the best tool to test and preview emails before sending?"
- 7.MailerSend10
Named in 2 of 3 answers to "What's the cheapest way to send transactional email at scale?"
- 8.Mailjet9
Named in 3 of 3 answers to "What's the best email API for a European company that needs EU data hosting?"
- 9.Postal7
Named in 3 of 3 answers to "What's the best open-source or self-hosted transactional email server?"
- 10.Elastic Email5
Named in 2 of 3 answers to "What's the cheapest way to send transactional email at scale?"
Ranked by how often AI assistants name each product, weighted by position. How the score works · Back to Postmark · Full Transactional email APIs leaderboard