Short version: one person's data, on one person's server, shared with nobody.
Only the owner's own account is connected. There are no other users and no sign-up.
gmail.readonly): to find school
notices and their attachments, bills and invoices, and messages waiting on a
reply. It cannot send, delete, label or change anything.To the owner's own server at home, and nowhere else. Nothing is sold, shared, or used for advertising, and no analytics or tracking of any kind is used. Summaries are shown to the owner on his own devices.
Working files hold roughly the last two weeks of what was read, and are overwritten as they are rebuilt. Everything sits on hardware the owner controls, in encrypted backups he holds.
The owner can revoke access at Google account permissions at any time, which stops all access immediately, and can delete the stored files himself. To ask about data held, write to the address below.