Connect guide

Connect Yahoo Mail to Claude and ChatGPT

Updated 16 September 2026

Yes — Claude and ChatGPT can both read, search and reply to your Yahoo Mail through Mailopoly, which is listed in the Claude Connectors Directory and is an approved app in the ChatGPT app directory. Connect Yahoo Mail to Mailopoly with a Yahoo app password, add Mailopoly in Claude or ChatGPT, and ask. The whole setup takes about a minute. Yahoo requires an app password generated from your account security settings; your regular Yahoo password won't work.

This guide also covers ymail.com, rocketmail.com, yahoo.co.uk, .fr, .de, .es, .it, .ca, .com.au, .co.in, .com.br, .com.tw and Frontier and Rogers mailboxes hosted by Yahoo — the steps are the same.

Before you start

A Mailopoly account — 7-day free trial, no credit card.
Yahoo requires an app password generated from your account security settings; your regular Yahoo password won't work.
Claude on any plan, including Free, or ChatGPT with apps enabled.

Connect Yahoo Mail to Claude or ChatGPT in three steps

1Connect Yahoo Mail to Mailopoly

Start a Mailopoly account at mailopoly.com/sign-up — 7-day free trial, no credit card.
In Yahoo, open Account Security and choose Generate app password (Yahoo's app password page takes you straight there). Name it Mailopoly.
Copy the 16-character code. Yahoo shows it once — if you close the window, generate a new one.
In Mailopoly choose Add email account, enter your full Yahoo address, and paste the app password in the password field. Mailopoly fills in the server settings for you.

Provider help: Generate a Yahoo app password ↗

2Add Mailopoly to Claude or ChatGPT

This part is the same whatever you connected in step 1. Mailopoly is listed in both directories, so it's a search and a tap — no endpoint URL to paste.

Claude

Open Settings → Connectors on claude.ai or in the Claude app — or choose Add connectors from the + menu in any chat.
Search the directory for Mailopoly and choose Connect.
Sign in with your Mailopoly account when prompted, then choose what Claude is allowed to do. Reading, making changes and sending are separate permissions.
Back in the chat, make sure the Mailopoly connector is switched on, then ask.

One listing covers Claude.ai, Claude Desktop, Claude mobile, Claude Code and Cowork, and it works on every Claude plan, including Free. In Claude Code you can also run claude mcp add --transport http mailopoly https://fastapi.prod.aws.mailopoly.com/mcp-server/ and then /mcp to sign in.

Mailopoly in the Claude Connectors Directory ↗

ChatGPT

Open the Apps directory in ChatGPT — from the + menu in any chat, or Settings → Apps & Connectors.
Search for Mailopoly and choose Connect.
Sign in with your Mailopoly account when prompted, then choose what ChatGPT is allowed to do. Reading, making changes and sending are separate permissions.
In any chat, type @Mailopoly and ask.

Mailopoly is an approved app in the ChatGPT app directory, so there's no developer mode and no endpoint URL to paste. Once connected it's available in every ChatGPT conversation on the web and in the mobile apps.

Mailopoly in the ChatGPT app directory ↗

Using something else? Claude Code, Cowork, Codex and any client that supports remote MCP servers connect the same way — the Mailopoly MCP page has the endpoint and per-client steps.

3Ask about your Yahoo Mail

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

What did my landlord email me about on Yahoo this week?
Find the flight confirmation in my Yahoo mail and add the dates to My Day.
Reply to the last message from Mum from my Yahoo address — tell her I'll call Sunday.

Yahoo Mail 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	imap.mail.yahoo.com
Port	993
Security	SSL/TLS
Username	Your full email address
Password	Yahoo app password (16 characters)

What Claude and ChatGPT can do with Yahoo Mail through Mailopoly

Search Yahoo Mail — 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 Yahoo Mail 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 Yahoo Mail 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 Yahoo Mail 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 an assistant at any time from Settings → Security in the Mailopoly app. More on the security page.

What goes wrong with Yahoo Mail, and the fix

Your normal Yahoo password won't work. Yahoo refuses it for mail apps; only an app password is accepted. If the connection fails with a login error, this is almost always why.
The app password is shown once. Yahoo won't display it again. If you lose it, generate a new one — the old one keeps working until you delete it.
Frontier, Rogers and other Yahoo-hosted mailboxes connect the same way, with an app password from the Yahoo security page, and the same imap.mail.yahoo.com server.
Comcast and AT&T addresses are different. Comcast mailboxes have moved to Yahoo's servers but use their own steps — see the Comcast guide. AT&T uses its own secure mail key on its own servers — see the any IMAP mailbox guide.

Start a free trial

7-day free trial, no credit card. Connect Yahoo Mail in about a minute.

Frequently asked questions

Does Claude or ChatGPT see my Yahoo app password?

Why does Yahoo need an app password at all?

Can I connect more than one account?

Does it work in Claude Desktop, Claude mobile and Claude Code?

Is there a free trial?

How does Mailopoly keep the connection safe?

Claude and ChatGPT connect to Mailopoly through OAuth 2.1 — a revocable, scoped sign-in, never a password. Reading, making changes and sending are separate permissions, every tool call is audit-logged against your account, and you can revoke any assistant from Settings → Security → Connected AI assistants in the app. Mailopoly is independently security-assessed to CASA Tier 2 by TAC Security.