# Mailgun: what AI models say (September 2026)

Source: Memetik Index, https://www.memetik.ai/vendors/mailgun
Website: https://www.mailgun.com

Mailgun was named in 39 of 50 AI answers across 1 category. Best position: Transactional email, 78% answer share, ranked #5, named first in 0%.

## 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.

Pricing: It has a free plan with 100 emails per day, paid plans starting at $15 per month, and enterprise quotes.
(From Mailgun's own website, read 2026-09-02.)

## By category

| Category | Rank | Answer share | Named first | Models |
|---|---|---|---|---|
| Transactional email (https://www.memetik.ai/index/transactional-email) | #5 of 12 | 78% | 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 |

## What the models said

> "Mailgun: best when you want API flexibility, inbound routing, and email validation, especially for teams that need more control."
> — Perplexity, Transactional email

> "Choose Mailgun if: you want a broad, well‑established email API with inbound routing, validation, granular logs, and regional data control."
> — Sonar Reasoning Pro, Transactional email

> "Choose Mailgun when inbound routing and operational flexibility matter."
> — GPT-5.6 Luna, Transactional email

> "For a greenfield build, I would evaluate Resend, Postmark, and Mailgun first before choosing SendGrid."
> — ChatGPT, Transactional email