Last updated 18 October 2026.
mail-copy is used by one person only, to back up their own Gmail account. It isn't used with anyone else's account.
The owner's email address, and their Gmail messages and labels, through Google's read-only Gmail access. Chats, spam and trash are left out.
On the owner's own computer, and in the owner's backups. The backups are encrypted before they leave that computer, and only the owner can decrypt them.
It doesn't send, change or delete mail. It doesn't share, sell or transfer the data, except to store the encrypted backups with a storage provider that can't read them. It shows no ads, and the data isn't used to train AI models.
mail-copy's use and transfer of information received from Google APIs adheres to the Google API Services User Data Policy, including the Limited Use requirements.
The owner can remove mail-copy's access at any time in their Google Account, under Security, "Your connections to third-party apps & services". Changing the Google password removes it too.