How do I add a non-Gmail or second account?
Lonzo works with one Google account, connected from Account → Connections. There is no way to add a second or non-Gmail account, and neither plan adds one — connecting a different Google account to the same Lonzo account is refused rather than swapped.
If your main mailbox is somewhere other than Gmail, Lonzo can't read it — it works through your connected Google account. If that ever changes, this page is where we'll say so.
See also: What will the Assistant plan add? · How do I connect Google?