Email, calendar and scheduling

A Fastmail AI Agent That Does The Inbox Chores For You

Fastmail already gives you rules and folders. Your agent uses them for you, finds the message you half remember and writes the replies you keep putting off.

From $10/month 30 days free No credit card

What Your Agent Does In Fastmail

  • Files Mail By Habit

    It learns that receipts from the hardware supplier go to Expenses and conference invitations go to Events, and proposes a rule for each.

  • Searches In Plain Words

    Ask for the email with the contractor’s revised estimate and it finds the right message among thousands, with the attachment named.

  • Writes Your Replies

    Give it two lines of what you want to say and it turns them into a courteous reply, left in Drafts so you can read it first.

Ask In Your Own Words

Type it in any project chat, or send it from your phone. Your agent works in Fastmail for you, with your own login, and reports back in the thread.

  • Find the email where the electrician gave us the revised quote.
  • Suggest rules for the senders that fill my inbox every day.
  • Draft a reply declining the vendor meeting, friendly but firm.

Use Fastmail With Octopus Prime

  1. Open Settings › Connections, choose Fastmail and sign in once with your own login.
  2. Your login stays in your Vault, a safe your agents can use but never read. Your agent works in Fastmail for you without ever seeing your password.
  3. Choose which agents can use Fastmail: just yours, one project’s or the whole company’s. You approve what matters.

How agents use apps without passwords

Questions About Fastmail And Your Agents

Does the agent need my main password?

You connect through the Vault, so the agents can use the sign-in but never see the password itself.

Can it work with my aliases and several folders?

Yes. It can search across the folders and addresses on the account you connect and tells you which one a message came from.

Does my agent see my Fastmail password?

No. Your Fastmail login stays in your Vault, a safe your agents can use but never read. You can remove an agent’s access, or disconnect Fastmail, at any time in Settings.

Put An Agent To Work In Fastmail. With Your Own Login. You Approve What Matters.

From $10/month 30 days free No credit card

Octopus Prime opens November 7, 2026.

Thanks. We’ll email you when it opens.

That didn’t go through. Please try again.