View in the Claude registry- Brand
- Fastmail
- Category
- Productivity
- Primary Subcategory
- Email Clients & Inbox Assistants
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
- Primary Subcategory
- Email Clients & Inbox Assistants
- Secondary Subcategories
- Calendar & Scheduling AppsNotes & Personal Knowledge BasesResidential Property Listing PortalsShopping Assistants & Price Comparison
- Brand
- Fastmail
- Access
- Account required
- First tracked
- 2026-07-21
- Tool count
- 29
- Market
- US
The Primary Subcategory used for this profile’s headline score.
Other Subcategories where the Integration is listed.
Agent DiscoverabilityClaude Discoverability ScoreUpdated dailyThe first to track the ChatGPT, Claude, Muse, Grok & Google ecosystems, with the largest database on the core platforms. Tracked daily since .
43/100
Emerging#4of 51
in Email Clients & Inbox Assistants- Picked
- 42.9/100
- Found
- 20.4/100
- Positioned
- 27.9/100
Category leaderboard
Email Clients & Inbox Assistants
- 1Microsoft 36570
- 2Gmail67
- 3Superhuman Mail53
- 4Fastmail43
- 5Google Calendar34
Get alerts for Fastmail
Get updates when Fastmail’s Discoverability Score or category rank changes.
Competing in Claude Email Clients & Inbox Assistants
View Category29 tools agents can invoke
Fastmail Claude Connector FAQ
How the directory, categories and Discoverability Score work.
Read the methodologyHow do I improve Fastmail's Claude Connector 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 2026-11-02, Fastmail competes with Microsoft 365, Gmail, Superhuman Mail, Google Calendar, Circleback, Fyxer, Fax.Plus, Inkbox and 42 more in Claude Email Clients & Inbox Assistants, ranked by public Discoverability Score.
Where does Fastmail rank in Email Clients & Inbox Assistants on Claude?
As of 2026-11-02, Fastmail ranks #4 of 51 in Claude Email Clients & Inbox Assistants with a Discoverability Score of 43/100 (Emerging).
Where is this profile measured?
This profile uses the geography attached to the latest public registry snapshot: US. Locale tags are intentionally omitted.