Vendors / Mailgun
Mailgun
Named in 39 of 50 AI answers across 1 category in September 2026. Best position: Transactional email, 78% answer share, ranked #5, named first in 0%.
78%
Best share Transactional email
What Mailgun is
Mailgun is an email delivery and deliverability service for developers and businesses that send email from applications. It has a free plan with 100 emails a day, paid plans from $15 a month, and enterprise quotes.
It sends email through RESTful APIs or an SMTP relay. Mailgun provides tracking, analytics and webhooks to record email activity. Its real-time Email Validation API checks email addresses, while inbound routing supports receiving email.
By category
First edition
| Category | Rank | Answer share | Named first | Models | Δ |
|---|---|---|---|---|---|
| Transactional emailStartup stack | #5 of 12 | 0% | GPT-5.6 Sol, ChatGPT, GPT-5.6 Luna, Claude Opus 5, Claude, Claude Fable 5, Gemini, Gemini 3.5 Flash, Perplexity, Sonar Reasoning Pro | new |
What the models said
“Mailgun: best when you want API flexibility, inbound routing, and email validation, especially for teams that need more control.”
“Choose Mailgun if: you want a broad, well‑established email API with inbound routing, validation, granular logs, and regional data control.”
“Choose Mailgun when inbound routing and operational flexibility matter.”
“For a greenfield build, I would evaluate Resend, Postmark, and Mailgun first before choosing SendGrid.”
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