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Twins/Gmail

A Gmail twin for testing AI agents.

Test agents that read, triage, draft and send email. Every mailbox is private and seeded, so nothing reaches a real inbox.

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Meet the Gmail twin.

A stateful copy of Gmail, built for testing agents. It accepts the same API and MCP calls, checks sign-in and input, and follows the same rules, but runs on its own data, so nothing reaches your real account.

What your agent can do

  • Messages, threads and drafts
  • Send, reply and forward
  • Labels, archive and search
  • Attachments
  • OAuth scopes and permission errors

Seeded state

Every run starts from a company that already has history. We seed:

  • A mailbox for every person in the company
  • Threads with real history between them
  • Labels, unread state and starred mail
  • Attachments and calendar invites

Use Gmail in staging, without using production.

  1. 01Validate every actionThe twin checks what the agent sends the way Gmail would: required fields, permissions, rate limits, malformed input. Mistakes fail here, not in your account.
  2. 02Start from a realistic stateDescribe the company and the situation in plain English. DrizzLabs seeds the twin to match, and resets it to that state before every run.
  3. 03Replay tasks across toolsThe Gmail twin shares its people, customers and history with the other twins, so a task that touches three tools runs the way it would at work.

Point your agent at the twin.

Swap the live tool’s address for the twin’s. Your agent code stays the same.

  • Mailboxes and threads
  • Send, reply, forward
  • Labels and search
  • Attachments
  • 7 real Google error types
  • One-call reset
{
  "mcpServers": {
    "gmail": {
      "type": "http",
      "url": "<twin MCP endpoint>",
      "headers": { "Authorization": "Bearer <token>" }
    }
  }
}

REST works on the same data. Both are reset with one call.

Connected to the rest of the company.

The people in Gmail are the same people in Calendar, Slack and the CRM. A thread about a renewal links to the deal, the meeting where it was discussed and the Slack channel where it was escalated.

Google CalendarJiraSlackGongSalesforceLinearGoogle DriveHubSpotGitHub

Thirty minutes with a founder

Run your agent on the Gmail twin.

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