mail.com MailCheck

Name: mail.com MailCheck
Rating: 2.7895 (76 reviews)
Author: 1&1 Mail & Media GmbH

Mail notifier for multiple email accounts.

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mail.com MailCheck is a powerful Chrome extension that acts as a mail notifier for your multiple email accounts. It delivers email notifications directly in your browser and on your desktop, ensuring you never miss important messages.

With just one click, you can read and write emails seamlessly within a single tool. It supports popular email providers such as mail.com, GMX, and WEB.DE, and now includes notifications for new and unread emails in your Gmail and Outlook accounts. Security is a top priority, featuring encrypted SSL connections and robust password protection to keep your information safe.

Add-on Communication Productivity Privacy & Security

By:

1&1 Mail & Media GmbH

Daily users:

1,224 -10

Rating:

2.79

(76)

Version:

6.5.5 Last updated: 2023-11-20

Version code:

5653054

Creation date:

2012-12-03

Risk:

Permissions:

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

Size:

2.32MB

URLs:

Website ,Privacy policy

Full description:

Source:

Firefox Browser Add-ons

Data ingested on:

2025-07-09

Ranking

# 2,749 ▼ 34

Other rankings

#73 in Alerts & Updates ▼ 3

#14 in mail keyword 36

#50 in email keyword 56

#50 in password-protected keyword 58 ▼ 1

#56 in hotmail keyword 11

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Other platforms

mail.com MailCheck (v8.0.6)

30,000 3.99

(414)

mail.com MailCheck (v6.5.5)

20,410 3.80

(35)

User reviews

The mail.com MailCheck Firefox add-on was praised for its convenience and time-saving email checking features on multiple accounts and other browsers. However, multiple users report critical issues with Firefox compatibility: inability to log in due to broken password prompts, login button becoming inactive, and the extension freezing. There are also concerns about excessive permissions demanding access to unrelated data, impacting user trust. Overall, while it worked well earlier and on other browsers, the current Firefox version is largely non-functional and frustrating.

Pros

Saves time by allowing quick checking of mail accounts without missing emails.
Convenient way to view emails from multiple accounts.
Worked well on other browsers like Chrome and Brave before issues arose.

Cons

Currently does not work properly on Firefox; users cannot log in or get stuck on the login screen.
Login process is broken—inputting email disables the login button and never prompts for password.
Requires excessive permissions, raising privacy and security concerns.
Extension compatibility with latest Firefox versions is problematic, with no recent updates.
Extension freezes or hangs after installation on Firefox.

Recent reviews

by 天灭*****, 2025-02-13

by Fi*****, 2024-12-21

Not working, simple as that.

by se*****, 2024-11-26

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.

mail.com 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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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.

mail.com 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.
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