GMX.com MailCheck for USA, CA, UK, FR and ES

Name: GMX.com MailCheck for USA, CA, UK, FR and ES
Rating: 3.625 (16 reviews)
Author: 1&1 Mail & Media GmbH

The fast and secure click to your GMX International inbox.

Download

Install Compare

GMX.com MailCheck is designed specifically for GMX international users from USA, Canada, UK, France, and Spain, providing a fast and secure way to access your inbox. Enjoy features like real-time email notifications directly in your browser and desktop, one-click reading and composing of emails, and the ability to delete unwanted messages from the preview panel.

This extension supports multiple GMX domains including gmx.com, gmx.fr, gmx.es, gmx.co.uk, mail.com, and even Outlook integration, consolidating all your email accounts into one accessible tool. The connection uses encrypted SSL and password protection to ensure maximum security. Note that email accounts from Germany, Austria, and Switzerland are not supported with this version.

Add-on Communication Productivity Privacy & Security

By:

1&1 Mail & Media GmbH

Daily users:

1,588 -38

Rating:

3.63

(16)

Version:

6.5.5 Last updated: 2023-11-20

Version code:

5653059

Creation date:

2019-07-09

Risk:

Permissions:

activeTab
tabs
storage
management
notifications
contextMenus
identity
search
https://*.gmx.com/*

Size:

2.39MB

URLs:

Website ,Privacy policy

Full description:

Source:

Firefox Browser Add-ons

Data ingested on:

2025-07-18

Ranking

# 2,337 ▼ 28

Other rankings

#63 in Alerts & Updates ▼ 1

#374 in Appearance ▼ 2

#28 in usb keyword 6

#34 in switzerland keyword 2

#42 in inbox keyword 26 ▼ 1

Upgrade to see more rankings

Other platforms

GMX.com MailCheck (v8.0.6)

9,000 4.17

(48)

User reviews

Pros

Useful and functional interface for checking emails
Displays a list of incoming emails
Combines email management with webmail access

Cons

Frequent sign-in issues and instability
Inability to preview emails or directly access them through the add-on
Limited functionalities, lacking features like starring emails
Not supporting all GMX domains, such as gmx.us

Recent reviews

by 敬念*****, 2025-02-11

I can't sign in at all. Even though my gmx.com domain is signed in on the web, mailcheck refuses to sign me in. And there is no error code either.

by So*****, 2024-12-16

Useful and functional, but could be improved with additionnal features, like the action to add a "star" to a mail. The rest of actions (read or write a mail) are just links that points to the webmail. All in all, it deserves more functionalities and a newer design.

by Fi*****, 2024-03-05

View all user reviews ›

Extension safety

Risk impact

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

GMX.com MailCheck for USA, CA, UK, FR and ES requires a lot of sensitive permissions. Exercise caution before installing.

Risk impact analysis details

Critical Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
Critical ******* ****** ** *** ********* ******** ********************
High *** ****** ****** ********** ***** ***** ******** ******** ** ********* ****** ****** ******** *****
High ******* ******* **** *** ****** ***** *** ***** ** ******* **** ********* ********* ** * *********** *****
Medium ******* ***** *********** ***** ****** ********* *** ***** ********* **** **** ************** *** ********
Medium ******* ******* ************* ***** *** ** ******* *** **** ******* ****** ******** *******

Risk likelihood

Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Browser Add-ons, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

GMX.com MailCheck for USA, CA, UK, FR and ES has earned a fairly good reputation and likely can be trusted.

Risk likelihood analysis details

High This extension has low user count. Unpopular extensions may not be stable or safe.
Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
Good **** ********* *** **** **** *******

Upgrade to see full risk analysis details

Instantly check and monitor your browser extensions' risks and permissions with Extension Guard.