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Fastmail

An MCP server for Fastmail customers and accounts

Category
Productivity
Primary Subcategory
Email Clients & Inbox Assistants
View in the Claude registry
Integration details

Description

MCP is an open standard, not tied to any one AI provider, for how AI clients talk to external data and tools. Think of it as another API sitting alongside IMAP, CalDAV, and CardDAV, except instead of being designed for mail apps or calendar clients, it’s designed for AI models to use directly. If you point Claude at our MCP server, you can ask it things like “what’s on my calendar tomorrow?”, “draft a reply to Sarah’s email about the Q3 budget”, or “find my dentist’s address in my contacts” and it will do them against your real Fastmail account.

Integration type
Connector
Verification status
Verified connector
Platform
Claude
Category
Productivity

The broad Category that contains the Primary Subcategory.

Primary Subcategory
Email Clients & Inbox Assistants

The Primary Subcategory used for this profile’s headline score.

Secondary Subcategories
None listed

Other Subcategories where the Integration is listed.

Brand
Fastmail
Access
Account required
First tracked
2026-07-21
Tool count
29
Geography
US

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Claude Discoverability Score

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Fastmail in Email Clients & Inbox Assistants

10/100
Buried

#6of 18competitors

Shown to buyers in 9.5% of contested Runs.

What we measure

One core score. Three important factors to discoverability.

  • Picked

    · 9.5/100
    Sets the score

  • Found

    · 5.4/100
    Diagnostic

  • Positioned

    · 24.2/100
    Diagnostic
How this score is measured

Fastmail organic discovery report

Get your full discovery report

See how Fastmail appears in Email Clients & Inbox Assistants, where it ranks, and how it compares with the wider Claude Connector ecosystem.

01

Your snapshot

Fastmail's score and Email Clients & Inbox Assistants position

02

Industry report

State of Agent Discovery

30-day industry report

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Primary Subcategory

Competing in Claude Email Clients & Inbox Assistants

View Category
#6 of 18ranked by public Discoverability Score
Primary Subcategory
1Microsoft 36581/100
2Gmail72/100
3Superhuman Mail46/100
4Google Calendar33/100
5Glean23/100
6Fastmail10/100
Recommended guideHow to get your Claude Connector organically discoveredFollow the practical steps agents use to find, shortlist, and choose your Connector.Read guide
Tools

29 tools agents can invoke

Fastmail FAQ
How do I improve a Verified 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 Fastmail alternatives on Claude?

As of 2026-09-28, Fastmail competes with Microsoft 365, Gmail, Superhuman Mail, Google Calendar, Glean, Fyxer, Inkbox, Aegis Mail, alfred_, CarlyEmail, Exchange Server by Postgate AI, Hostinger Mail, Mailbox MCP, Mailopoly Inbox, mailows, Missive, Multi Mail in Claude Email Clients & Inbox Assistants, ranked by public Discoverability Score.

Where does Fastmail rank in Email Clients & Inbox Assistants on Claude?

As of 2026-09-28, Fastmail ranks #6 of 18 in Claude Email Clients & Inbox Assistants with a Discoverability Score of 10/100 (Buried).

Where is this profile measured?

This profile uses the geography attached to the latest public registry snapshot: US. Locale tags are intentionally omitted.