Project Summary
Advanced Email client from KDE.
Features:
* Mail protocols IMAP, POP3, SMTP
* Authentication via NTLM (Windows & Kerberos)
* Secure TLS logins
* International language support
* Spell-checking
* Integrated OpenPGP, PGP/MIME, and S/MIME
* Composing HTML mail
* Plain text reading mode for HTML mail
* Receive & accept scheduled invitations from colleagues into calendar
* Spam checkers integration
* Probability meter for spam
* Powerful search with filter abilities
* Import from other clients/formats
* Integration with Kontact
* Encrypted passwords with KWallet
* Different backup options
* Flagging & tagging messages to for sorting & extraction of info
* Mailing lists management
* Emoji support
* Sender's avatar
* X-Face support
* Compression of attachments
In a Nutshell, KMail...
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has a well established, mature codebase
maintained by a large development team
with increasing Y-O-Y commits -
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took an estimated 21 years of effort (COCOMO model)
starting with its first commit in June, 1997
ending with its most recent commit about 20 hours ago
Quick Reference
Project Security
Vulnerabilities per Version ( last 10 releases )
There are no reported vulnerabilities
Project Vulnerability Report
Security Confidence Index
Vulnerability Exposure Index
Did You Know...
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nearly 1 in 3 companies have no process for identifying, tracking, or remediating known open source vulnerabilities
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30 Day SummarySep 29 2026 — Oct 29 2026
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12 Month SummaryOct 29 2025 — Oct 29 2026
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