Terms of Service

Effective 3 November 2026

Inbox Classic is free, open source software. You may use, copy, change and share it under the MIT license. It comes without warranty.

Who we are

Inbox Classic and this website are provided by Postal Systems OÜ (registry code 14971894), Narva mnt 5, 10117 Tallinn, Estonia. Contact: info@postalsys.com.

License

Inbox Classic is licensed under the MIT license, which is the full set of terms for the software itself. The third-party components it includes are listed, with their licenses, in the file THIRD-PARTY-NOTICES.txt installed with it. There is no fee and no account to create.

Your mail accounts

Use Inbox Classic only with mail accounts you are allowed to use, and follow the terms of your mail provider. When you sign in with Microsoft, Google or another provider, their terms apply to your account there. Inbox Classic is not made, endorsed or supported by Microsoft or Google; their names and logos belong to them.

No warranty

Inbox Classic and this website are provided "as is", without warranty of any kind, express or implied, including the warranties of merchantability, fitness for a particular purpose and non-infringement. To the extent the law allows, Postal Systems is not liable for any claim, damages or other liability arising from the software or its use, including lost or undelivered mail. Keep your mail on your mail server or backed up.

Downloads

Download Inbox Classic only from this website or its GitHub releases. Each release is signed by Postal Systems OÜ.

Privacy

How Inbox Classic and this website handle data is described in the Privacy Policy.

Law and changes

These terms are governed by the laws of Estonia. If they change, the new version is published on this page with a new effective date.