Sharing a mailbox with your team

Both let someone other than the mailbox's creator read and send from it, without ever seeing its real password, but they work differently and fit different situations.

From the mailbox's own webmail (Settings > Security > App Passwords), generate a password and label it with the person's name. You get a string like inkb-xxxx-xxxx-xxxx-xxxx once: copy it and hand it to them directly.

They open the normal webmail login page and sign in with the mailbox's email address and that password, exactly as if it were the real password, except it's theirs alone and you can revoke it without touching anyone else's access.

This is the right choice when the person doesn't have (and doesn't need) a platform account: an intern, a contractor, someone who only ever needs to check one shared inbox and nothing else on the platform.

From the mailbox's settings, either its own webmail (Settings > Security > Shared Access) or, more conveniently, straight from the client dashboard when editing the mailbox, enter the email of an existing platform account and grant access.

That person never touches the mailbox's email or password at all. They log into their own account as usual, open "Shared with me" (or the equivalent on their dashboard), and click through directly into the shared inbox.

This is the right choice when the person already has (or will have) their own platform account, a colleague who also manages their own domains, for instance, and you'd rather revoke their access by removing one row than hunt down a password string.

Both are revoked from the same places you granted them, instantly and independently of each other: deleting one app password or one shared-access grant never affects anyone else's access to the same mailbox.

For shared access specifically, revocation is immediate even for a session that's already open: the next action that person takes in the webmail will be rejected, not just their next login attempt.