SECURITY REPORT · EXTENSHI SCAN
WEB.DE MailCheck for Firefox
Firefox extension·by 1&1 Mail & Media GmbH
0
/ 100 SAFETY SCORE
CAUTION
Mostly fine, but a few things worth reviewing before you install.
Automated analysis of publicly available code — not a professional security audit. It may produce false positives and does not prove an extension is unsafe or safe. Treat it as one signal among many. Disclaimer · Report an issue
How it ranks
WEB.DE MailCheck for Firefox's safety score vs every other extension we've scanned
Globally
71.09%of extensions carry more risk
Riskier ←→ Safer
Ranked across every extension we scan
In its category
61.09%of its category extensions carry more risk
Riskier ←→ Safer
Ranked within its category
Findings
36
median 38Lower is safer
Risky permissions
3
median 1Critical + high perms
Total permissions
37
median 4All declared perms
Critical findings
0
median 2Severity = Critical
Findings breakdown
Automated security signal · 36 distinct issues across 6 severities
36
distinct issues
detected
detected
Critical00%
High514%
Needs Review00%
Medium2878%
Low38%
Info00%
Permissions requested
3 risky permissions of 37 total
2 critical permissions require attention
This extension requests 37 permissions in total. 3 of them grant broad capabilities that are worth a careful look.
Critical
Manage other extensions
Can enable, disable, or uninstall other browser extensions
Critical
Access to all websites(optional)
Can read and modify content on every website you visit
High
View open tabs
Can see URLs and titles of all open tabs
Medium
Access current tab
Can temporarily access the content of the active tab when you click the extension
Medium
Store local data
Can save data locally in the browser for persistence
Medium
Show notifications
Can display desktop notifications outside the browser
Medium
Add context menu items
Can add custom items to the right-click context menu
Medium
Access user identity
Can get OAuth2 tokens and access your Google account identity
Low
Trigger searches
Can trigger searches using the default search engine
Info
https://*.web.de/*
No additional information available.
Info
https://*.gmx.net/*
No additional information available.
Are you the author of WEB.DE MailCheck for Firefox?
Claim this extension to respond to findings, add context, and earn a verified badge on extenshi.io.
Add the badge to your README
Show WEB.DE MailCheck for Firefox's live security score on GitHub or in your docs
Scan performed by extenshi.io · Jul 25, 2026· partial run (some scanners failed)
Browser extensions made transparent.