Transactional email APIs · #9 of 16 · ↑ MailerSend · ↓ Postal
Mailjet
Mailjet ranks #9 of 16 in transactional email apis in the week of 28 September 2026, with a visibility score of 9 across ChatGPT, Claude, Gemini and Perplexity. It was named in 13% of the answers we sampled.
sampled: 3 of 4 assistants this week
Mailjet shows up in 8 of 62 answers in the Transactional email APIs category, with an overall score of 9 out of 100 (ChatGPT 7, Claude 12, Perplexity 7). Its strongest showing is on EU data hosting, where it's named in all 3 of 3 answers, plus a mention in 2 of 3 answers on best free tier. It gets a single nod each for best startup pick, SendGrid alternative, and best email API in 2026. It's absent from questions on webhooks, high-volume pricing, cheap scale, self-hosting, and deliverability.
this is mine claim it, free, forever. We also check whether ChatGPT and Claude can read mailjet.com.
Who's talking about you
| assistant | score | named in, this week | usual spot, this week |
|---|---|---|---|
| ChatGPT | 7 | 10% of answers | #3.5 |
| Claude | 12 | 20% of answers | #5.8 |
| Gemini | not sampled this week | ||
| Perplexity | 7 | 10% of answers | #3.5 |
Questions you win
| question | named in | best spot |
|---|---|---|
| What's the best email API for a European company that needs EU data hosting? | 3 of 3 | #3 |
| Which email API has the best free tier? | 2 of 3 | #2 |
| Which transactional email service is best for a startup? | 1 of 3 | #4 |
| What's the best alternative to SendGrid? | 1 of 3 | #9 |
| What's the best email API in 2026? | 1 of 3 | #9 |
Questions you lose
| question | who got named instead |
|---|---|
| What are the best transactional email APIs? | Postmark, Amazon SES, Resend |
| What's the best email API for developers? | Resend, Postmark, Mailgun |
| Which email API has the best deliverability? | Postmark, Amazon SES, Mailtrap |
| What's the cheapest way to send transactional email at scale? | Amazon SES, MailerSend, Elastic Email |
| What's the best SMTP service for an app? | Postmark, Resend, Amazon SES |
| Which transactional email provider has the best developer experience? | Resend, Postmark, SendGrid |
| What's the best way to send password reset and verification emails from my app? | Postmark, Amazon SES, Resend |
| What's the best email API for a Next.js or serverless app? | Resend, Postmark, SendGrid |
| What's the best email API with React or JSX email templates? | Resend, Postmark |
| What's the best open-source or self-hosted transactional email server? | Postal |
| What's the best tool to test and preview emails before sending? | nobody in particular |
| What's the best email service for sending receipts and order confirmations? | Postmark, Resend, Amazon SES |
| What's the best email API with webhooks for bounces and opens? | Postmark, Resend, Mailgun |
| What's the best transactional email provider for high volume at low cost? | Amazon SES, Resend, Elastic Email |
| What's the best email API that also handles marketing campaigns? | SendGrid, Brevo |
Assistants cited 10 pages for questions in this category that name your rivals and not you. Claim to see them. See all sources for Transactional email APIs.
In their words
- ChatGPT“| Mailjet | EU-focused SMBs | European-origin provider | Good if you need both transactional and marketing capabilities.”
- Claude“Mailjet — Same parent company as Mailgun, French-origin, EU-hosted, ISO 27001 certified.”
- Perplexity“| Mailjet | Established European provider and enterprise compliance | EU-based data centers and ISO 27001 certification are reported.”
Closest rivals
- Mailjet vs MailerSend10
- Mailjet vs Postal7
- Mailjet vs Elastic Email5
- Mailjet vs Mailtrap13
- Mailjet vs Loops4
All Mailjet alternatives · Full Transactional email APIs leaderboard · Sources