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Mailgun vs Postmark Comparison (2026)

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Mailgun

Postmark

Overview

Mailgun is an email automation service offering a complete cloud-based email service for sending, receiving & tracking email sent through your websites & apps

Postmark is a cloud-based email management software designed to help businesses handle and streamline the delivery of emails. Supervisors can create transactional emails using customizable templates, track open click rates, and automatically receive notifications about invoice bounces.

Platforms supported

Web-based
iPhone app
Android app
Windows Phone app

Typical customers

Freelancers
Small businesses
Mid size businesses
Large enterprises

Customer support

Phone
Online
Knowledge base
Video tutorials

view more detailsview details

Platforms supported

Web-based
iPhone app
Android app
Windows Phone app

Typical customers

Freelancers
Small businesses
Mid size businesses
Large enterprises

Customer support

Phone
Online
Knowledge base
Video tutorials

view more detailsview details

Video & Screenshots

Pricing

Starting from

Per month

Free trial available
Credit cardless trial
Free account
Subscription based

Starting from

Per month

Free trial available
Credit cardless trial
Free account
Subscription based

User reviews

4.3

197

125

Value for money

Ease of use

Features

Customer support

75%

would recommend this app

4.7

Value for money

Ease of use

Features

Customer support

94%

would recommend this app

Pros

“Steep Learning Curve: The sheer breadth of options (dedicated IPs, suppression lists, custom routing) can overwhelm newcomers; the UI feels more like a developer console than a user‑friendly dashboard.”

Gilbert P.

DevOPS

“Limited Built‑in Email Templates: Unlike some competitors, Mailgun doesn’t offer a visual template editor; you need to craft HTML yourself or use third‑party tools.”

Gilbert P.

DevOPS

“They provide backward compatibility with their old API to reduce downtime during upgrades, especially for legacy systems where upgrading to the latest library or source code is not feasible.”

Alan P.

Software Engineer

Pros

“Postmark’s pricing is on the higher end compared to other email service providers”

Himanshu V.

Senior Software Developer

“The documentation feels a little fragmented - some things are in the official API documentation, while other things missing from the official documentation are included in blog posts or other posts within the Support Center.”

Gregor S.

Director

“Have a not find any difficulty yet, but have receive an email that from July onwards they will switch the subscription to montly basis instead of anually, that too also comes after active campaign group take over the postmark app”

Bhagya M.

Editor

Cons

“Pricing Complexity: While free tier is generous for low volume, the cost structure (per‑sent + per‑recipient, dedicated IP fees, and extra features) quickly adds up, making it hard to predict expenses without careful budgeting.”

Gilbert P.

DevOPS

“Need your own custom domain which is understandable for the sake of potential email spam which degrades the credibility of the platform.”

Edward L.

Manager

“I didn't like how mailgun disable our account (with over 25 active applications/domains and hundreds of users) and didn't tell use why for over 3 days.”

Niels v.

CEO

Cons

“I have lost so many emails due to sneaky changes in their pricing tier without proper notice and extremely poor customer service. While they used to care about the customer most than anything, they've now become soulless, uncaring and unapologetic.”

Vadim K.

Owner

“Pricing was a concern at first but well... If we have to pay for a 3rd party provider to deliver our e-mails, we'd rather spend a bit more and have e-mails inboxed rather than discarded or sent to spam. Plus, if you run in any issue, Postmark support usually answers warmly under 24 hours... where the competition usually takes either forever or/and a very cold and super technical approach making you feel like an idiot.”

Geoffrey G.

Founder

“I was a bit frustrated : most SMTP integrations wouldn't work with their initial implementation of marketing emails, as it required to send custom headers along the e-mail. But they took the feedback and a few months later, a workaround was implemented.”

Geoffrey G.

Founder