# 1&1 MailCheck

> The safe way to access your personal mail.

Canonical page: [https://chrome-stats.com/d/1und1-mailcheck](https://chrome-stats.com/d/1und1-mailcheck)

## Overview

- **ID:** `1und1-mailcheck`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Removed
- **Publisher:** 1&1 Mail & Media GmbH
- **Daily users:** 802
- **Weekly downloads:** 431
- **Rating:** 1.67 / 5 (6 ratings)
- **Version:** 6.5.5
- **Last updated:** 2023-11-20
- **First published:** 2021-10-21
- **Size:** 2.35 MB
- **Data as of:** 2026-08-04
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/1und1-mailcheck/)
- **Privacy policy:** [https://addons.mozilla.org/firefox/addon/1und1-mailcheck/privacy/](https://addons.mozilla.org/firefox/addon/1und1-mailcheck/privacy/)

## Description

### 1&1 MailCheck Chrome Extension

1&1 MailCheck offers a safe and efficient way to access your personal mail directly from your browser. Designed to keep your emails secure, it streamlines your mail management experience by providing timely notifications and easy access.

The extension ensures that you stay updated with your emails without compromising your privacy and security. Ideal for users seeking a reliable mail tool, 1&1 MailCheck integrates seamlessly into your browsing experience.

## Permissions and access

### Permissions

- `activeTab`
- `tabs`
- `storage`
- `management`
- `notifications`
- `contextMenus`
- `identity`
- `search`
- `https://*.1und1.de/*`
- `https://*.uilogin.de/*`

### Content script matches

- `*.web.de`
- `*.gmx.net`
- `*.gmx.de`
- `*.gmx.ch`
- `*.gmx.at`
- `*.gmx.com`
- `*.mail.com`
- `*.1und1.de`
- `*.1and1.com`
- `suche.1und1.de`
- `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:** High 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 is not longer available in the store

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

## Similar extensions and apps

- [mail.com MailCheck](https://chrome-stats.com/d/mailcom-mailcheck) — 1,214 users, 2.70 / 5
- [WEB.DE MailCheck for Firefox](https://chrome-stats.com/d/webde-mailcheck) — 21,787 users, 3.03 / 5
- [Ew, Mail!-01](https://chrome-stats.com/d/ew-mail-01)
- [WriterAccess Mail Check](https://chrome-stats.com/d/writeraccess-mail-check)
- [GMX MailCheck for Firefox](https://chrome-stats.com/d/gmx-mailcheck) — 17,540 users, 2.84 / 5
- [Yandex Mail Checker](https://chrome-stats.com/d/yandex-mail-checker) — 3 users
- [Mail Safe](https://chrome-stats.com/d/mail-safe) — 1 users
- [Mail1.io - Temporary Disposable Email](https://chrome-stats.com/d/mail1-io-temp-mail) — 258 users, 5.00 / 5
- [GMX.com MailCheck for USA, CA, UK, FR and ES](https://chrome-stats.com/d/gmx-com-mailcheck) — 1,853 users, 3.71 / 5
- [webmailbox](https://chrome-stats.com/d/all) — 3 users
- [Email Health Checker](https://chrome-stats.com/d/email-health-checker) — 1 users
- [Mail Checker for Proton Mail](https://chrome-stats.com/d/mail-checker-for-proton-mail) — 12 users, 5.00 / 5

---

Source: [Chrome-Stats](https://chrome-stats.com/d/1und1-mailcheck)