// MCP TOOL REFERENCE

FASTMAIL MCP SERVER TOOLS

38 tools from the Fastmail MCP Server MCP Server, categorised by risk level.

// ALL 38 FASTMAIL MCP SERVER TOOLS

READ 19 tools

Read advanced_search Advanced email search with multiple criteria Read check_function_availability Check which MCP functions are available based on account permissions Read download_attachment Download an email attachment. If savePath is provided, saves the file to disk and returns the file path and... Read get_account_summary Get overall account summary with statistics Read get_calendar_event Get a specific calendar event by ID Read get_contact Get a specific contact by ID Read get_email Get a specific email by ID Read get_email_attachments Get list of attachments for an email Read get_mailbox_stats Get statistics for a mailbox (unread count, total emails, etc.) Read get_recent_emails Get the most recent emails from inbox (like top-ten) Read get_thread Get all emails in a conversation thread Read list_calendar_events List events from a calendar Read list_calendars List all calendars Read list_contacts List contacts from the address book Read list_emails List emails from a mailbox Read list_identities List sending identities (email addresses that can be used for sending) Read list_mailboxes List all mailboxes in the Fastmail account Read search_contacts Search contacts by name or email Read search_emails Search emails by subject or content

WRITE 17 tools

Write bulk_remove_labels Remove labels from multiple emails simultaneously Write remove_labels Remove specific labels (mailboxes) from an email Write reply_email Reply to an existing email with proper threading headers (In-Reply-To, References). Automatically fetches t... Write test_bulk_operations Test bulk operations by finding recent emails and performing safe operations (mark read/unread) Write add_labels Add labels (mailboxes) to an email without removing existing ones Write bulk_add_labels Add labels to multiple emails simultaneously Write bulk_mark_read Mark multiple emails as read/unread Write bulk_move Move multiple emails to a mailbox Write bulk_pin Pin or unpin multiple emails Write create_calendar_event Create a new calendar event Write create_draft Create an email draft without sending it. Supports threading headers for replies. IMPORTANT: each call crea... Write edit_draft Edit an existing draft email. Since JMAP emails are immutable, this atomically destroys the old draft and c... Write mark_email_read Mark an email as read or unread Write move_email Move an email to a different mailbox Write pin_email Pin or unpin an email Write send_draft Send an existing draft email. The draft must have recipients (to/cc/bcc) and a from address. After sending,... Write send_email Send an email

DESTRUCTIVE 2 tools

Destructive bulk_delete Delete multiple emails (move to trash) Destructive delete_email Delete an email (move to trash)

// FAQ

How many tools does the Fastmail MCP Server MCP server have? +

The Fastmail MCP Server MCP server exposes 38 tools across 3 categories: Read, Write, Destructive.

How do I enforce policies on Fastmail MCP Server tools? +

Route the Fastmail MCP Server server through the PolicyLayer gateway. Define allow, deny, or approval rules per tool in the dashboard; they are enforced on every call before it reaches the server.

What risk categories do Fastmail MCP Server tools fall into? +

Fastmail MCP Server tools are categorised as Read (19), Write (17), Destructive (2). Each category has a recommended default policy.

Enforce policy on every Fastmail MCP Server tool call.

Start from Fastmail MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

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