kestrel-mail

Kestrel Mail Terms of Service

Last updated: April 8, 2026

Acceptance of Terms

By downloading, installing, or using Kestrel Mail, you agree to these Terms of Service. If you do not agree, do not use the software.

Description of Service

Kestrel Mail is a free, open-source desktop email client licensed under the GNU General Public License v3.0 or later (GPL-3.0-or-later). It provides email, calendar, and contact functionality by connecting to your existing email and calendar providers.

License

Kestrel Mail is distributed under the GPL-3.0-or-later license. You are free to use, modify, and redistribute the software in accordance with the terms of that license. The full license text is available in the project’s LICENSE file.

Your Accounts and Data

• Kestrel Mail connects to third-party services (e.g., Gmail, Google Calendar, Google Contacts) using credentials you provide.
• You are responsible for maintaining the security of your accounts and devices.
• Kestrel Mail stores data locally on your computer. You are responsible for backing up your local data.
• See the Privacy Policy for details on what data is stored and how it is used.

Third-Party Services

Kestrel Mail interacts with third-party services (email providers, Google APIs) on your behalf. Your use of those services is governed by their respective terms of service and privacy policies. Kestrel Mail is not affiliated with or endorsed by Google, Gmail, or any other email provider.

Disclaimer of Warranties

Kestrel Mail is provided “as is” without warranty of any kind, express or implied, including but not limited to warranties of merchantability, fitness for a particular purpose, or non-infringement.

The developers do not warrant that:

• The software will be uninterrupted, error-free, or secure
• Any defects will be corrected
• The software will be compatible with your system or email provider

Limitation of Liability

To the maximum extent permitted by applicable law, the developers of Kestrel Mail shall not be liable for any direct, indirect, incidental, special, consequential, or exemplary damages arising from your use of or inability to use the software, including but not limited to loss of data, loss of email, or unauthorized access to your accounts.

Data Loss

Email operations (moving, deleting, labeling) performed through Kestrel Mail are carried out on your email provider’s servers and may be irreversible. The developers are not responsible for any data loss resulting from the use of this software.

Changes to These Terms

These terms may be updated from time to time. Changes will be reflected in the project’s source repository. The “Last updated” date at the top of this document indicates when the terms were last modified. Continued use of the software after changes constitutes acceptance of the revised terms.

Governing Law

These terms are governed by the laws of the jurisdiction in which the primary developer resides, without regard to conflict of law provisions.

Contact

For questions about these terms, please open an issue on the GitHub repository.

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