Gridlink Mail does not have an account system, does not run a server, and does not collect any data from you. This policy is short because there is very little to say.
Gridlink Mail is a free, open-source email client for Android. It connects directly to the mail server you configure, using JMAP or IMAP/SMTP. There is no Gridlink account, no Gridlink server, and no intermediary between the app on your device and your mail provider.
Nothing. Specifically:
Your email, contacts, and calendar data go directly between the app and the mail server you configure — we never see it, store it, or have access to it. Remote images in messages are blocked by default so a message cannot silently contact a remote server; you choose when to load them.
Any credentials you enter (mail server address, username, password or OAuth token) are stored only on your device, used only to connect to the server you specified, and are never transmitted anywhere else.
The app requests only the Android permissions it needs to function — network access to reach your mail server, and (if you use them) calendar/contacts sync and notifications. None of these are used to collect or transmit data to us, because there is no "us" on the other end to receive it.
The app does not integrate any third-party analytics, advertising, or tracking SDKs. The only network connection it makes is to the mail server address you provide.
Gridlink Mail is free software under the GPLv3. The full source is public, so this policy isn't a claim you have to take on faith — you or anyone else can read exactly what the app does at github.com/tatelink/gridlink-mail.
Questions about this policy can be raised as an issue on the GitHub repository.