A shared inbox where the agent drafts and humans approve from Outlook is a powerful hybrid — and it's the part of "AI email" that most demos quietly skip.
Most "AI email" demos point a model at a human's personal inbox: connect a Gmail grant, summarize threads, maybe auto-draft a reply that nobody actually trusts enough to send. That's fine for a personal assistant. It falls apart the moment you want the agent to be a participant on a real team mailbox — support@yourcompany.com — where five humans and one agent all need to see the same messages, the same folders, and the same draft sitting in the queue.
The naive fix is to give the agent its own service and bolt a UI on top. Now you're building a mail client. You've got a database of "agent state," a sync loop, a permissions layer, and a frontend nobody asked for, all to reimplement what Outlook already does well.
There's a better shape. A Nylas Agent Account is a real mailbox you can drive two ways at once: the agent works it over the API, and your humans work it from their normal mail client over IMAP/SMTP. Both surfaces read and write the same storage. A draft the agent creates via the API shows up in the Drafts folder in Apple Mail. A message a human drags into "Needs review" in Outlook shows up in the API's folders field within seconds. That bidirectional sync is the whole trick, and it's what makes genuine human+agent collaboration possible instead of two systems fighting over one inbox.
