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Yahoo Mail MCP server: options without an official one
- Yahoo has no MCP server, and neither Claude nor ChatGPT has a built-in Yahoo Mail connector.
- Every option needs a Yahoo app password: you run a generic server yourself, or a hosted service keeps the password for you.
- That password opens the whole mailbox, deleting included. To cut access at Yahoo's end, delete the app password.
A Yahoo Mail MCP server lets an AI assistant such as Claude or ChatGPT search, read and sometimes send your Yahoo email. MCP (Model Context Protocol) is the standard way these assistants connect to other apps. Yahoo Mail still has millions of users, but it has no official MCP server and no connector in Claude or ChatGPT. If you want an agent to read your Yahoo inbox, you choose between a server you run and a company that runs one for you.
This article covers both, with what each lets an agent do and what to check first. Other providers are in email MCP servers compared.
Yahoo Mail MCP options compared
Checked on 27 October 2026, from Yahoo Help, the GitHub projects and the services' own pages (their claims, not tested by us).
| Option | Who runs it | Read and search | Send | Move | Delete | Read-only option | Where your app password is kept |
|---|---|---|---|---|---|---|---|
| Generic IMAP server, e.g. imap-mcp-server | You | Yes | Yes | Yes | Yes | Yes | Your computer |
| yahoo-mcp | You, on Cloudflare | Yes | Yes | Yes | No | No | Your Cloudflare account |
| MCPEmails | Hosted service | Yes | Yes | Yes | Yes | Yes | Their servers |
| MailMCP | Hosted service, data in France | Yes | Yes | Yes | Yes | ? | Their servers |
| MailTag's MCP | Hosted service, in the EU | Yes | Yes | Yes | No | Yes | Its servers, encrypted |
? = not documented. Yahoo has no official option. yahoo-mcp keeps sending off until you turn it on, then asks you to confirm each email. It can move mail to the trash but not delete it for good. The hosted services say they encrypt the password. In MailTag, moving means putting an email in another category; it never leaves the mailbox.
Is there an official Yahoo Mail MCP server?
No. Yahoo's help pages cover mail settings and app passwords, not MCP. Claude's built-in mail connectors are for Google Workspace and Microsoft 365, and ChatGPT's email apps are for Gmail and Outlook. Anything you connect will use IMAP and an app password.
What you need: IMAP and an app password
IMAP is the standard way mail apps reach a mailbox, and Yahoo supports it (Yahoo Help). Your normal password won't work for other apps. Instead you create an app password, a separate password for one app. It's in Yahoo's Account Security page, under External connections → Create app password (Yahoo Help). The step-by-step is in Yahoo app password.
An app password has no limits. It can read, flag, move and delete any message. What the agent can actually do depends on the actions the MCP server offers.
Running a server yourself
A generic IMAP MCP server is the most flexible route. Some can be limited to reading, or to a list of actions you pick. Others keep the password in your system's keychain instead of a text file. More in IMAP MCP server.
There are Yahoo-specific projects too. yahoo-mcp runs on Cloudflare's free hosting. Claude or ChatGPT sign in to it rather than seeing your password. It shows a preview and asks you to confirm before sending, and it can't delete mail for good. It's a careful design, but a one-person project started in September 2026.
Hosted services
Several companies offer a ready-made MCP server for Yahoo. You paste your app password into their site and add their address to Claude or ChatGPT. MCPEmails says it fetches messages live and doesn't keep message bodies. It can move, archive and delete. When you connect an assistant you can pick read-only, and a mailbox can be set to receive only, so it never sends. MailMCP can send, reply, forward, move and delete, and schedule email for later. It keeps its data in France.
The trade-off is plain: no setup, but a third company holds a password that opens your whole mailbox. Read their privacy policy, and check whether you can turn off sending and deleting.
For developers
- Yahoo IMAP:
imap.mail.yahoo.com, port 993, SSL; your full address as username. - imap-mcp-server:
IMAP_MCP_READ_ONLYfor read tools only,IMAP_MCP_ENABLED_TOOLSfor a hand-picked list. - email-mcp: more tools, password in the system keychain.
- yahoo-mcp: a Cloudflare Worker with OAuth towards the MCP clients; send tools only with
SEND_ENABLED=true, then two-step send; no permanent delete; no licence declared in the repo.
Yahoo Mail with MailTag's MCP server
MailTag connects to Yahoo Mail with an app password and sorts each new email into your own categories as folders. It runs on its servers in the EU without storing email content. Its MCP server (https://mailtag.app/mcp) is also hosted, but built around limits rather than full access:
- the agent signs in with your MailTag account and never sees your app password;
- you choose per agent which categories it sees, how far back, and whether it gets the sender, subject, text and attachments;
- drafts and sending are off until you turn them on: replies only or new email, only to people you've replied to or to anyone, up to 10, 50 or 200 a day;
- it has no way to delete email or move it out of your mailbox.
It only sees email MailTag labeled in the last 30 days, so it isn't a search over years of Yahoo mail. See the MCP docs and connect Claude or ChatGPT to email.
FAQ
Does Yahoo have an MCP server?
No. As of 27 October 2026 there's no official Yahoo Mail MCP server, and Claude and ChatGPT have no built-in Yahoo connector.
Can I connect Yahoo Mail to Claude?
Yes, by adding a custom connector in Claude that points to a server that works with Yahoo: one you run, or a hosted service. All of them need a Yahoo app password.
What are Yahoo's IMAP settings for an MCP server?
Server imap.mail.yahoo.com, port 993, SSL, your full email address as username and an app password as the password.
How do I revoke an MCP server's access to Yahoo?
Delete the app password you gave it in your Yahoo Account Security page. That cuts it off at Yahoo's end, whatever the server does.
Can I make a Yahoo MCP server read-only?
With most options, yes. Generic IMAP servers have a read-only switch, and MCPEmails lets you pick read-only when you connect. yahoo-mcp can turn off sending, but it can still move mail to the trash.
Is it safe to use a hosted Yahoo MCP service?
It means trusting that company with a password that opens your whole mailbox. Check its privacy policy, where it's hosted, and whether you can limit sending and deleting.