Is "GMX MailCheck for Firefox" on Firefox Add-ons Safe to Install?

1&1 Mail & Media GmbH · firefox · v8.0.18

E-Mail notification in the browser and on the desktop Read and write your emails with only one click Access to all your email accounts in only one tool (e.g. GMX , WEB.DE , 1&1 , mail.com and many more) Encrypted SSL connection and password protection with highest security standards

Risk Assessment

Pending
0
out of 100
MINIMAL

0 security findings detected across all analyzers

Firefox extension requesting 39 permissions

No Threats Detected

This extension passed all security checks

About This Extension

<ul><li>E-Mail notification in the browser and on the desktop</li><li>Read and write your emails with only one click</li><li>Access to all your email accounts in only one tool (e.g. <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/4c7bb370b79facbf09837132859273528fde29d215eccd9a0a87480737e1e3ab/http%3A//gmx.net/" rel="nofollow">GMX</a>, <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/5cff19bdb0c5a157dcbcf3f3f022cbc4794fa85e6eec5f3aeab7fc39e005f70f/http%3A//WEB.DE" rel="nofollow">WEB.DE</a>, <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/97a21e25e1265f1a1578520cd11b3ad83ff65d14915e70e89e399f67940b6a26/http%3A//home.1und1.de/" rel="nofollow">1&amp;1</a>, <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/6b59bf8b94224a366968d483216df0e725c9c203992ca62f2fd4a4f66ebeeb53/http%3A//mail.com" rel="nofollow">mail.com</a> and many more)</li><li>Encrypted SSL connection and password protection with highest security standards</li></ul>

No Findings

All security checks passed

Security Analysis Summary

Security Analysis Overview

GMX MailCheck for Firefox is a Firefox Add-ons extension published by 1&1 Mail & Media GmbH. Version 8.0.18 has been analyzed by the Risky Plugins security platform, receiving a risk score of 0/100 (MINIMAL risk) based on 0 security findings.

Risk Assessment

This extension presents minimal security concerns. The automated analysis found very few or no issues, suggesting it is suitable for general use.

What Was Analyzed

The security assessment covers multiple analysis categories:

  • Malware Detection: YARA rule matching against 2,400+ malware signatures
  • Secret Detection: Scanning for exposed API keys, tokens, and credentials
  • Static Analysis: Code-level security analysis for common vulnerability patterns
  • Network Analysis: Detection of suspicious network communications and endpoints
  • Obfuscation Detection: Identification of code obfuscation techniques

Developer Information

GMX MailCheck for Firefox is published by 1&1 Mail & Media GmbH on the Firefox Add-ons marketplace. The extension has approximately 17K users.

Recommendation

Based on the automated security analysis, this extension appears safe for general use. As with any extension, users should review the requested permissions before installation.

Frequently Asked Questions

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