1&1 MailCheck Firefox

1&1 MailCheck

The safe way to access your personal mail.
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Features & Capabilities

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.

User Growth & Download Statistics

Manifest V2 Add-on Overrides search engine
By:
1&1 Mail & Media GmbH
Daily users:
768 36
Rating:
1.67
(6)
Version:
6.5.5 Last updated: 2023-11-20
Version code:
5653055
Creation date:
2021-10-21
Risk:
Very high risk impact Moderate risk likelihood
Permissions:
Content scripts matches:
  • *.web.de
  • *.gmx.net
  • *.gmx.de
  • *.gmx.ch
  • *.gmx.at
  • *.gmx.com
  • *.mail.com
  • *.1und1.de
  • *.1and1.com
  • suche.1und1.de
    • See more
Size:
2.35MB
Email:
mo*****@1und1.de
URLs:
Privacy policy
Source:
Firefox Add-ons Store
Data ingested on:
2026-06-23
Compare stats and ranking:

Ranking

# 3,780 ▲ 157
Other rankings
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For Developers

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Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.
Developed by:
1&1 Mail & Media GmbH
Firefox Add-ons Store
https://addons.mozilla.org/firefox/addon/1und1-mailcheck/
Email:
mo*****@1und1.de

User Reviews

erkennt den eigenen domainnamen nicht, funktioniert nicht mehr.schade (e-mail.de)
by Sm*****, 2025-05-23
by 退出*****, 2025-02-19
es war früher so praktisch. man mußte nur auf den briefumschlag klicken und schon war man im postfach. machen sie das puzzleteil bitte schnellstens wieder rückgängig. jetzt ist es viel aufwändiger, sich einzuloggen.
by Fi*****, 2024-11-27
View all user reviews ›

Is 1&1 MailCheck Safe?

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.

1&1 MailCheck 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.
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  • 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 Add-ons Store, 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.

1&1 MailCheck is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

Risk likelihood analysis details
  • High This extension has low user count. Unpopular extensions may not be stable or safe.
  • Medium **** ********* *** *** **** *******
  • Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
  • Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
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