I Gave My AI Agent a Mailbox So Calendar Invites Finally Looked Native I thought calendar invites would be the easy part. That was adorable. The task sounded simple: my agent needed to create real meeting invitations, not just local calendar entries. The difference matters. A local event is a note to yourself. A proper invite shows up with an organizer, attendee status, email delivery, and the familiar accept/decline flow that humans actually trust. So I gave the agent its own mailbox and calendar identity. Not a fake From: header. Not a script pretending to be a calendar client. A real account with SMTP, DNS authentication, and CalDAV access. The architecture The final shape looked like this: AI agent | |-- SMTP check: can this identity send normal mail?…