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Mailjet vs GMass Comparison (2026)

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Good recommendations?

Mailjet

GMass

Overview

With GDPR-compliant infrastructure and proven deliverability, Mailjet is the best Email Marketing Software & Email API for Teams. Marketers design, deliver, and automate email newsletter while developers power transactional email via robust API platform.

GMass is a Google Chrome extension, which helps businesses run mass email campaigns from Gmail, manage responses, create recipient lists, and more. Supervisors can gain visibility into sent, opened, clicked, replied, unsubscribed, bounced, and rejected email metrics through reports.

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

4.2

456

264

115

Value for money

Ease of use

Features

Customer support

75%

would recommend this app

4.8

1.4K

1.2K

201

Value for money

Ease of use

Features

Customer support

93%

would recommend this app

Pros

“Our data is top-notch: over 98% deliverability, engagement and click rates far above the industry average, almost no unsubscribes, and nearly zero spam reports.”

Bertrand L.

CEO

“I use Mailjet for system alerts when it's a pain to get O365 to work.”

Christopher E.

Owner

“I send monthly marketing emails for our engineering company, and Mialjet provides me with everything I need to make them great.”

Bianca L.

Human Resources Generalist

Pros

“It's a reliable and easy-to-use email marketing tool that integrates seamlessly with Gmail, making it simple to create, personalize, schedule, and track campaigns without switching platforms.”

Saksham K.

Marketing manager

“It makes email outreach much easier by allowing me to manage campaigns directly from Gmail, schedule emails, track open rates, and automate follow-ups.”

Karthikeya S.

Admin

“I was able to send over 300 emails and landed an agent along with 250 emails for a campaign pitch and allowed me to make each email individualized.”

Jackie P.

Model and Creative Director

Cons

“We are not using purchased lists, scraped contacts, or unsolicited third-party marketing campaigns. Despite providing multiple explanations about our business model, customer relationship, data collection process, legal basis, and campaign metrics, Mailjet kept applying restrictive sending limits and repeatedly asked for increasingly specific documentation, including individual proof of consent for specific contacts.”

Eduardo V.

Market Research Manager

“Their support responses felt like a never-ending compliance loop, with repeated requests that are not always realistic for large companies with hundreds of thousands of active customers. If you are a company planning to use Mailjet for high-volume customer communications, especially if your contacts come from an existing contractual customer relationship rather than a simple newsletter checkbox, be very careful.”

Eduardo V.

Market Research Manager

“In our experience, Mailjet was not a good fit for enterprise-level customer communication where contacts are collected through real business processes, contracts, customer service interactions, and onboarding workflows.”

Eduardo V.

Market Research Manager

Cons

“The sequence logic is less sophisticated than what I had access to in Intercom Series previously, but that's an unfair comparison given the price difference.”

Rene B.

Partner

“There are limitations in email template customization, a potential learning curve due to its feature-rich interface, deliverability issues related to its reliance on Gmail's infrastructure, and a lack of built-in CRM functionalities”

Joseph C.

Director of Operations

“No matter what tool you use, failing to warm up your domain and validate your email list will ruin your sender reputation.”

Narayan S.

Digital Marketing Consultant