One file holding your mail, contacts and
server info for moving to another client, or for keeping what the server no longer has. It
is sealed to this identity and deliberately leaves the secret itself out.
Write a backup file
Restore from a backup file
trust
rotations
Issues
a fresh key from your secret with a signed certificate proving it replaces this one. Contacts
accept the change from that chain, and the old key stays readable. Rotation is not revocation.
log out
Removes this
identity from this client entirely: the secret, pins, contacts and every cached message.
Without a backup of the secret there is no way back in. Mail already fetched here may have no
other copy anywhere, unless "leave mail on server" was on. Whatever is still on the server
comes back on the first fetch after logging back in.