Give Your AI Agent Its Own Email Address (Not Access to Yours)

Most "AI agent + email" tutorials start the same way: connect the agent to a human's inbox over OAuth, hope the token doesn't expire mid-run, and pray the agent never replies to the wrong thread on someone's behalf. There's a different model: give the agent its own email address. Nylas recently shipped Agent Accounts (currently in beta) — fully functional, Nylas-hosted mailboxes you create and control entirely through the API. Each one is a real name@company.com address that sends, receives, hosts calendar events, and RSVPs to invitations. To anyone interacting with it, it's indistinguishable from a human-operated account. I work on the docs at Nylas, so I've spent a lot of time with this API. Here's a tour of what it does and how to get a mailbox running in a few minutes. Why not just connect the agent to a human inbox? You can — that's what OAuth grants are for, and they're the right tool when the agent works on behalf of a person. But a lot of agent workflows want a first-class identity instead: System mailboxes ( sales@ , support@ , scheduling@ ) that your app owns end-to-end. No OAuth consent screen, no user offboarding breaking your integration. Ephemeral inboxes for test automation — provision a fresh address per run, sign up for a service, grab the OTP from the verification email, tear it down. Per-customer identities in multi-tenant apps: scheduling@customer-a.com , scheduling@customer-b.com , each with its own send quota and sender reputation, all in one Nylas application. A scheduling bot with its own calendar that proposes slots, sends invites, and shows up as a normal participant in Google Calendar, Microsoft 365, and Apple Calendar. The key design decision: an Agent Account is just another grant . It gets a grant_id that works with every existing Nylas endpoint — Messages, Drafts, Threads, Folders, Attachments, Calendars, Events, Webhooks. If you've already built against connected accounts, nothing new to learn. Create a mailbox with one API call Every