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GMX MailCheck for Firefox extension

Security at a glance

Some riskSafety score 71/10034 findings

Automated estimate from our latest scan (malware, permissions, obfuscation) — not a security audit. Higher safety score is better.

See the full security report

Firefox listing ID: gmx-mailcheck

Permissions (39)

  • Manage other extensions
  • Access to all websites
  • View open tabs

Related extensions

Frequently asked questions

Is GMX MailCheck for Firefox safe to use?

Our latest automated scan rates the Firefox listing of GMX MailCheck for Firefox at 71/100 (some risk) — malware, permission and obfuscation checks combined. The full report lists every finding behind the number.

What permissions does GMX MailCheck for Firefox require?

GMX MailCheck for Firefox requests 39 permissions. The most significant: Manage other extensions, Access to all websites, View open tabs. See the full breakdown in the security report.

Who develops GMX MailCheck for Firefox?

GMX MailCheck for Firefox is published by 1&1 Mail & Media GmbH. Impersonators copy popular extension names, so always verify the developer line and listing id on the store page before installing.