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

> The fast and secure click to your GMX International inbox.

Canonical page: [https://chrome-stats.com/d/gmx-com-mailcheck](https://chrome-stats.com/d/gmx-com-mailcheck)

## Overview

- **ID:** `gmx-com-mailcheck`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** 1&1 Mail & Media GmbH
- **Category:** appearance,alerts-updates
- **Daily users:** 1,853
- **Weekly downloads:** 11
- **Rating:** 3.71 / 5 (17 ratings)
- **Version:** 6.5.5
- **Last updated:** 2023-11-20
- **First published:** 2019-07-09
- **Size:** 2.39 MB
- **Data as of:** 2026-09-13
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/gmx-com-mailcheck/)
- **Website:** [https://support.gmx.com/](https://support.gmx.com/)
- **Privacy policy:** [https://addons.mozilla.org/firefox/addon/gmx-com-mailcheck/privacy/](https://addons.mozilla.org/firefox/addon/gmx-com-mailcheck/privacy/)

## Description

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.

## Rankings

- #2,320 — Overall
- #59 — Alerts & Updates
- #373 — Appearance
- #34 — switzerland
- #36 — usb
- #51 — inbox

## Permissions and access

### Permissions

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

### Content script matches

- `*.web.de`
- `*.gmx.net`
- `*.gmx.de`
- `*.gmx.ch`
- `*.gmx.at`
- `*.gmx.com`
- `*.mail.com`
- `*.1und1.de`
- `*.1and1.com`
- `search.gmx.com`
- `dl.web.de`
- `dl.gmx.net`
- `dl.gmx.com`
- `dl.mail.com`
- `dl.1und1.de`
- `www.google.at`
- `www.google.ch`
- `www.google.com`
- `www.google.co.uk`
- `www.google.de`
- `www.google.es`
- `www.google.fr`
- `www.google.it`
- `www.google.pl`
- `www.google.ro`
- `1und1.de`
- `www.1und1.de`
- `gmx.net`
- `www.gmx.net`
- `gmx.com`
- `www.gmx.com`
- `mail.com`
- `www.mail.com`
- `web.de`
- `www.web.de`
- `login.live.com`

## Safety

- **Risk impact:** Very high risk impact
- **Risk likelihood:** Low risk likelihood

### Analysis details

- Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
- This extension has low user count. Unpopular extensions may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

## Review summary

### 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

## Similar extensions and apps

- [GMX MailCheck for Firefox](https://chrome-stats.com/d/gmx-mailcheck) — 17,865 users, 2.84 / 5
- [mail.com MailCheck](https://chrome-stats.com/d/mailcom-mailcheck) — 1,231 users, 2.70 / 5
- [WEB.DE MailCheck for Firefox](https://chrome-stats.com/d/webde-mailcheck) — 22,181 users, 3.03 / 5
- [GMX Mail Checker](https://chrome-stats.com/d/gmx-mail-checker) — 20 users
- [GMX Email Notifier](https://chrome-stats.com/d/gmx-email-notifier) — 1 users
- [Email Notifier](https://chrome-stats.com/d/email-notifier) — 370 users, 3.37 / 5
- [GMX Go!](https://chrome-stats.com/d/gmx-go) — 376 users, 5.00 / 5
- [X-notifier (for Gmail,Hotmail,Yahoo,AOL ...)](https://chrome-stats.com/d/xnotifier) — 6,245 users, 2.89 / 5
- [GMX Suche Add-on für Ihren Browser](https://chrome-stats.com/d/gmx-suche-firefox) — 55 users
- [Simplify Gmx.net](https://chrome-stats.com/d/simplify-gmx-net) — 23 users, 4.25 / 5
- [1&1 MailCheck](https://chrome-stats.com/d/1und1-mailcheck) — 802 users, 1.67 / 5
- [Mail Checker for Proton Mail](https://chrome-stats.com/d/mail-checker-for-proton-mail) — 12 users, 5.00 / 5

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Source: [Chrome-Stats](https://chrome-stats.com/d/gmx-com-mailcheck)