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What is KMail?

KMail is the email client integrated into Kontact, the comprehensive personal information management suite offered by KDE. The application comes with default settings that emphasize core functionalities while maintaining strong security and privacy protocols. Users benefit from extensive end-to-end encryption options, including built-in support for OpenPGP and S/MIME, along with an intuitive setup wizard that simplifies the process of encryption and key generation. In addition, KMail provides transport encryption via SSL/TLS and supports diverse authentication mechanisms, such as GSSAPI (Kerberos) and OAuth2. The program also ensures robust protection for HTML content, effectively blocking any hidden external references in emails that might jeopardize user privacy or expose sensitive data. To enhance security further, KMail includes a phishing protection feature that warns users about potentially harmful links found in their emails. Additionally, it offers spam protection capabilities, allowing for seamless integration with well-known local spam filtering tools like SpamAssassin or Bogofilter, which helps users efficiently handle unwanted messages. With its array of functionalities, KMail creates a secure and user-centric email management experience that caters to the needs of its users. The combination of sophisticated security measures and user-friendly features makes KMail a preferred choice for those seeking a reliable email client.

What is Aster Mail?

Aster Mail is a free, open-source email service that prioritizes user privacy through end-to-end encryption, offering a straightforward experience that avoids complicated technical hurdles. The encryption happens directly on the user's device, guaranteeing that our servers remain uninformed about the contents of messages or any related metadata. By leveraging the widely recognized OpenPGP standard with RSA-4096 keys, Aster allows users to maintain independence from any single provider, as their keys are compatible with GPG, Thunderbird, or any other PGP-enabled client, and can be easily found through WKD and public key servers. For communications between users of Aster, the service utilizes a Signal-inspired X3DH and Double Ratchet protocol, which significantly boosts forward secrecy. Each subscription level includes encrypted email functionalities, the ability to use custom domains, free aliases, protection from trackers, and unrestricted access on both web and desktop interfaces. The entire codebase is released under the AGPL v3 license on GitHub, promoting rigorous audits, and it includes a public warrant canary along with a transparent vulnerability disclosure policy to enhance user trust. The free subscription offers 10 GB of encrypted storage, 5 aliases, and 1 custom domain, while paid plans commence at just $2.99 monthly, with all servers based in Germany to comply with strict data protection laws. Users can confidently communicate, knowing their messages are safeguarded by leading encryption technologies, making Aster Mail an excellent choice for those valuing privacy. Moreover, the user-friendly interface ensures that even those with limited technical knowledge can take full advantage of its robust security features.

Media

Media

No images available

Integrations Supported

Disroot
KDE Plasma
SpamAssassin

Integrations Supported

Disroot
KDE Plasma
SpamAssassin

API Availability

Has API

API Availability

Has API

Pricing Information

Pricing not provided.
Free Trial Offered?
Free Version

Pricing Information

Pricing not provided.
Free Trial Offered?
Free Version

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Company Facts

Organization Name

KDE

Date Founded

1996

Company Location

Germany

Company Website

kontact.kde.org/components/kmail.html

Company Facts

Organization Name

Aster Mail

Date Founded

2025

Company Location

United States

Company Website

astermail.org

Categories and Features

Categories and Features

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