Mailbox MCP
Read, send and organise the email mailbox you already own: Microsoft 365, Outlook.com, Gmail or any IMAP host. It opens the mailbox behind Outlook, not the app, so there is nothing to install.
- Category
- Productivity
- Primary Subcategory
- Email Clients & Inbox Assistants
Integration details
Description
Mailbox MCP connects Claude to the email mailbox you already own: Microsoft 365, Outlook.com, Gmail, Fastmail, or any IMAP host. Nothing is migrated and no copy of your mail is kept. Looking for a way to connect Claude to Outlook? This is it. Outlook is a program on your computer; your mail lives in a mailbox behind it. Mailbox MCP connects to that mailbox directly, so it works whether or not Outlook is installed, and treats Microsoft 365, Gmail and any IMAP host the same way. Ask what has come in and get the senders, subjects and first line of every message in one answer. Search across folders. Read a message, or a whole thread, without marking anything as read. Read what is inside an attachment: an invoice total, a spreadsheet, a scanned letter. Send, reply and forward as yourself or as any alias on the mailbox, save a draft as a real threaded reply, and file the way your own mail client does: archive, report junk, move, flag, and manage folders. Your address book comes too: Outlook contacts with a Microsoft 365 mailbox, Google contacts with a Google sign-in of their own, or any CardDAV book by its address. Find a person, read their card with the postal address, add and correct contacts, and import a contacts file. On Microsoft 365, Google Calendar and CalDAV accounts it opens the diary too: see who is free, find a time everybody can meet, book it, move it, cancel it, and set your out-of-office. Every connection carries a permission level you choose at approval: read only, draft and file, or send and delete. A shared mailbox can be worked by a team: claim a message so colleagues see who has it, hand one to a named person, and hold a draft for the owner's approval before it is sent. Ask whether an email actually arrived: it reads the bounces your mailbox received and says which address failed and whether that is permanent. Attachments travel without passing through the model. The company behind it, BSolve IT Limited, holds Cyber Essentials certification.
- Integration type
- Connector
- Verification status
Community connector- Platform
- Claude
- Primary Subcategory
- Email Clients & Inbox Assistants
- Secondary Subcategories
- None listed
- Brand
- Mailbox MCP
- Access
- Account required
- First tracked
- 2026-09-07
- Tool count
- 64
- Geography
- US
The Primary Subcategory used for this profile’s headline score.
Other Subcategories where the Integration is listed.
Claude Discoverability Score
Claude Connector discovery is coming soon
Community Connectors only appear in Claude’s registry.Once verified, organic discovery begins and we can calculate your score.Read more about Community Connector verification.
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What discovery looks like

Claude can surface verified Connectors when they match a user’s Prompt.
How Claude Connector discovery works
Your Connector will compete to appear for users’ Prompts once Claude verifies it
Competing in Claude Email Clients & Inbox Assistants
View Category64 tools agents can invoke
How do I improve a Community connector's discoverability?
The levers are the listing surface agents actually read: names, descriptions, keywords, tool metadata, and registry health. Which lever matters depends on where discovery breaks, which is what continuous measurement shows.
What are Mailbox MCP alternatives on Claude?
As of 2026-09-28, Mailbox MCP competes with Microsoft 365, Gmail, Superhuman Mail, Google Calendar, Glean, Fastmail, Fyxer, Inkbox, Aegis Mail, alfred_, CarlyEmail, Exchange Server by Postgate AI, Hostinger Mail, Mailopoly Inbox, mailows, Missive, Multi Mail in Claude Email Clients & Inbox Assistants, ranked by public Discoverability Score.
Where is this profile measured?
This profile uses the geography attached to the latest public registry snapshot: US. Locale tags are intentionally omitted.