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 decreasing 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 3 days 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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in 2016, 47% of companies did not have formal process in place to track OS code
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compare projects before you chose one to use
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65% of companies leverage OSS to speed application development in 2016
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30 Day SummaryJan 26 2026 — Feb 25 2026
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12 Month SummaryFeb 25 2025 — Feb 25 2026
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