Amazon SES vs Mailgun
as AI assistants see them, week of 2026-09-28
Amazon SES comes out ahead of Mailgun in how AI assistants talk about transactional email, with an overall score of 59 versus 41. SES gets named in 51 of 62 answers, compared to Mailgun's 40 of 62. Head to head, SES is named more often in 11 questions, Mailgun in just 1, with 8 ties. Both are named in all 4 answers for "best transactional email APIs," and both are left out entirely when it comes to tools for testing and previewing emails before sending. By model, Claude scores SES highest at 64, while Perplexity is toughest on Mailgun at 32.
Head to head
| metric | Amazon SES | Mailgun |
|---|---|---|
| score | 59 | 41 |
| questions won | 19 | 19 |
By assistant
Amazon SES
| assistant | score | named in, this week | usual spot, this week |
|---|---|---|---|
| ChatGPT | 56 | 75% of answers | #3.3 |
| Claude | 64 | 95% of answers | #4.2 |
| Gemini | not sampled this week | ||
| Perplexity | 57 | 75% of answers | #3.1 |
Mailgun
| assistant | score | named in, this week | usual spot, this week |
|---|---|---|---|
| ChatGPT | 45 | 65% of answers | #3.9 |
| Claude | 46 | 80% of answers | #6.0 |
| Gemini | not sampled this week | ||
| Perplexity | 32 | 45% of answers | #3.7 |
Where they differ
Only Amazon SES gets named for
nothing exclusive
Only Mailgun gets named for
nothing exclusive
More comparisons
- Amazon SES vs Resend
- Amazon SES vs Postmark
- Amazon SES vs SendGrid
- Amazon SES vs Brevo
- Mailgun vs SendGrid
- Brevo vs Mailgun
Not sold on either?
Scores count how often each assistant names a product, weighted by position. How the score works · Full Transactional email APIs leaderboard