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Mailgun vs Campaigner Comparison (2026)

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Good recommendations?

Mailgun

Campaigner

Overview

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

Advanced yet easy-to-use email marketing platform featuring automation workflows, contact segmentation, multivariate experiments and A/B split testing, drag & drop and HTML email editors, pre-built templates. conversion tracking and real time reporting.

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

3.9

428

144

183

Value for money

Ease of use

Features

Customer support

54%

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

“I haven’t used Campaigner for long, but it allows me to automate email marketing.”

Jonathan M.

Business Development and Marketing Lead

“They've really helped modernise our Service and provide us with the capability worthy of our incredible donors.”

Andrew H.

Head of Donor Engagement

“As with any software you buy, the 'sell-in' always goes well, it always sounds exciting and any barrier seems insignificant.”

Andrew H.

Head of Donor Engagement

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 think it needs alot of work with regards to increasing file sizes within the context of the email campaign (increased file size for gifs, email resolution looks pixelated) and the way the files have to be formatted specifically with no dashes or spaces inside the email campaign takes up alot of time for our company.”

Kristen T.

Social Media and Marketing Specialist

“Lack of ability (back end API) to connect to our desktop CRM, no SMS ability, ability to send single emails to certain clients not there. ”

milan m.

CPA

“I emailed asking for our account to be closed only to find that we then started getting billed for a server that not only did we not want to use WE COULDN'T USE IT!”

Mark R.

Director