Connect guide

Connect Any IMAP Mailbox to Muse

Updated 29 October 2026

Yes — Muse can read, search and reply to your Any IMAP Mailbox through Mailopoly. Connect Any IMAP Mailbox to Mailopoly with your mailbox password and the IMAP server address, add Mailopoly to Muse as a custom connector, sign in and ask. One connection covers IMAP mailbox and every other account you own. Mailopoly detects the server from your domain's mail records and fills it in; you can edit the host and port if your provider uses something unusual, and some providers require an app password instead of your normal one.

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This guide also covers custom domains, cPanel and Plesk hosting and IONOS, OVH, Hostinger, Namecheap, GoDaddy, one.com, STRATO and other hosting providers — the steps are the same.

Before you start

A Mailopoly account — 7-day free trial, no credit card.
Mailopoly detects the server from your domain's mail records and fills it in; you can edit the host and port if your provider uses something unusual, and some providers require an app password instead of your normal one.
Access to Muse — Meta is rolling it out country by country.

Connect Any IMAP Mailbox to Muse in three steps

1 Connect Any IMAP Mailbox to Mailopoly

Start a Mailopoly account at mailopoly.com/sign-up — 7-day free trial, no credit card.
In Mailopoly choose Add email account and enter your full address. Mailopoly looks up your domain's mail records and fills in the IMAP server and port.
Enter your mailbox password — the one you use for webmail — unless your provider requires an app password, in which case generate one in your provider's security settings.
If the connection fails, check the host and port against your provider's IMAP settings page (usually the same host you'd use in Apple Mail or Outlook, port 993 with SSL) and edit them in Mailopoly.

2 Add Mailopoly to Muse

This part is the same whatever you connected in step 1.

Add Mailopoly to Muse

These steps are taken from public documentation, and we haven't yet checked each one in Muse ourselves. If a label doesn't match what you see, Muse's own help page, linked below, has the current wording.

Open a chat in Muse — on the web or in the app — and ask it to create a custom connector for a remote MCP server called Mailopoly at `https://fastapi.prod.aws.mailopoly.com/mcp-server/`. Muse walks you through the rest.
Sign in with your Mailopoly account when prompted, then choose what Muse is allowed to do. Reading, making changes and sending are separate permissions.
Back in a chat, ask.

Mailopoly isn't in Muse's connector list, so Muse takes it as a custom connector — the same connection, added with one sentence instead of a tap. Muse connects from Meta's cloud, so there's nothing to install.

Connectors in Muse — Meta Help Center ↗

3 Ask about your IMAP mailbox

Whatever you've connected to Mailopoly is what your assistant can reach. Some things people ask on day one:

What's in the Cleanbox for my company domain today?
Find the hosting renewal invoice in my work mailbox and tell me the amount.
Reply to the client's last email from my company address.

Any IMAP Mailbox server settings

Mailopoly fills these in for you when you enter your address. They're here in case you need to check them or your provider uses something unusual.

IMAP server	Detected from your domain (editable)
Port	993
Security	SSL/TLS
Username	Your full email address
Password	Your mailbox password, or an app password if your provider requires one

What Muse can do with Any IMAP Mailbox through Mailopoly

Search Any IMAP Mailbox — and every other account you own — in one question. By sender, date, topic, or the half-remembered phrase somewhere in the body.
Read your Cleanbox, not your whole inbox. Mailopoly sorts IMAP mailbox as it arrives: personal and important mail in Cleanbox, promotions and newsletters in Other. Ask for either.
Summarise a thread, a day or a week. "What did the school send this week?" comes back as an answer, not a list of links.
Reply from your IMAP mailbox address, in your voice. Save a draft to Mailopoly for review, or send — sending is a separate permission and a confirm-first action.
Schedule a send for later, and cancel it if you change your mind.
Pull out invoices, events and deliveries. Amounts and due dates, calendar invitations, parcel tracking — extracted on arrival and added to My Day.
Find an attachment. Every attachment from IMAP mailbox lands in PolyBox, so "find the PDF the accountant sent" just works.
Unsubscribe, snooze, file and mark read from the chat, on whichever account the mail belongs to.

Reading, making changes and sending are separate permissions you grant when you connect, and you can revoke Muse at any time from Settings → Security in the Mailopoly app. More on the security page.

What goes wrong with Any IMAP Mailbox, and the fix

The username is usually your full address, not the part before the @. Some hosting providers use a separate mailbox username — it's shown in your hosting control panel.
Port 993 with SSL/TLS is what nearly every provider uses. If yours only offers STARTTLS on port 143, set that in Mailopoly's advanced settings.
Providers that need an app password rather than your normal one include Mail.ru, Orange, AT&T and any account with two-factor authentication turned on. Your provider's IMAP help page will say.
Proton Mail, Tutanota and Hey don't offer standard IMAP, so they can't be connected this way.
Muse doesn't offer to create the connector: say exactly what you want — a custom connector for a remote MCP server called Mailopoly at the address above — and that it signs in with OAuth.
Mailopoly isn't in Muse's connector list: add it as a custom connector instead. It's the same connection to your Mailopoly account.

Using Claude or ChatGPT instead? Connect Any IMAP Mailbox to Claude and ChatGPT.