Build a support triage agent that owns its own inbox

Most "AI support bot" demos bolt an LLM onto a shared Gmail or hang a webhook off a helpdesk and call it a day. That works right up until you want the agent to actually be a participant in the conversation — to receive mail at a real address, decide what to do with it, and reply as itself instead of as a script poking at someone else's mailbox.

So let's not do that. Let's give [email protected] its own first-class identity: an Agent Account that receives every inbound email, classifies it with a model, routes and filters it with server-side rules, and replies in the right thread — once, never twice. No shared inbox, no scraping a human's account, no helpdesk middleman.

I work on the Nylas CLI, so the terminal commands below are the exact ones I reach for when I'm setting one of these up. Every step gets the two-angle tour: the raw curl call and the nylas command that does the same thing.

What you actually get

An Agent Account is, underneath, just a Nylas grant with a grant_id. That's the whole trick, and it's worth sitting with for a second: there's nothing new to learn on the data plane. Every grant-scoped endpoint you already know — Messages, Drafts, Threads, Folders, Attachments, Contacts, Calendars, Events — works against this grant exactly the way it works against a Gmail or Microsoft grant you obtained through OAuth. The provider happens to be nylas instead of google, and that's the only difference your application code sees.

Concretely, the account ships with:

• A real, send-and-receive mailbox on a domain you control (or a *.nylas.email trial subdomain).


• Six reserved system folders out of the box — inbox, sent, drafts, trash, junk, and archive.


• Standard webhook triggers: you subscribe once at the application level (POST /v3/webhooks), and message.created then fires on inbound mail. A subscription isn't scoped to one grant — each event's payload carries a grant_id, so you filter for your Agent Account's events on the way in. Agent Accounts also emit deliverability triggers: message.delivered, message.bounced, message.complaint, and message.rejected.


• No OAuth dance and no refresh token to babysit. You create it with one API call.

The part I like as an SRE: because it's a normal grant, it slots into whatever observability, retry, and webhook plumbing you already built for human accounts. You're not maintaining a special-case code path.

Before you begin

Two things:

1. 
   An API key. All requests authenticate with Authorization: Bearer <NYLAS_API_KEY>, and the key identifies your application. Examples here hit https://api.us.nylas.com.


2. 
   A verified domain. Agent Accounts live on a domain — either a custom one you register and publish DNS records for, or a Nylas trial subdomain like yourapp.nylas.email. New domains warm up over roughly four weeks, so if you're going to production, register the real one early. The full DNS walkthrough is in the .
   
   
   

   
   
   
   Carry context across the thread
   

   
   
   

   A support thread is rarely one message. The customer replies, you reply, they clarify — and the agent needs the whole exchange to answer the third message sensibly. Because every message in a conversation shares a thread_id, fetching context is one call.
   
   

   
   
   
   
   

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   nylas email threads show thread-xyz789
   
   

   
   
   
   
   
   
   
   

   Or the same call over the API:
   
   

   
   
   
   
   

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   curl "https://api.us.nylas.com/v3/grants/<NYLAS_GRANT_ID>/threads/<THREAD_ID>" \
   
     --header "Authorization: Bearer <NYLAS_API_KEY>"
   
   

   
   
   
   
   
   
   
   

   GET /v3/grants/{grant_id}/threads/{thread_id} returns the thread with its message_ids; fetch those for the full transcript, sort by date, and hand the model the running conversation rather than the latest message in isolation. For long threads, summarize the early messages and pass only the last few in full — same answer quality, far fewer tokens. The — the reply-detection recipe this builds on.



3. 
   — domains, display names, IMAP access, and multi-tenant patterns.


4. The CLI command reference lives at
   


5. Industry playbooks hub: https://cli.nylas.com/ai-answers/agent-account-industry-playbooks.md
   


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