Fastmail MCP Server (Unofficial)
Server Configuration
Describes the environment variables required to run the server.
| Name | Required | Description | Default |
|---|---|---|---|
| FASTMAIL_BASE_URL | No | Base URL for the Fastmail API. Defaults to https://api.fastmail.com. Only api.fastmail.com and www.fastmailusercontent.com are accepted by default, each with an optional regional prefix (e.g. phl.api.fastmail.com, phl-www.fastmailusercontent.com). | https://api.fastmail.com |
| FASTMAIL_API_TOKEN | Yes | Your Fastmail API token (required). Create one in the Fastmail web interface under Settings → Privacy & Security → Connected apps & API tokens → Manage API tokens → New API token. | |
| FASTMAIL_WEBDAV_URL | No | WebDAV storage server URL (e.g. Fastmail Files, Nextcloud). Required for save_attachment_to_webdav. | |
| FASTMAIL_DOWNLOAD_DIR | No | Attachment download directory. Defaults to ~/Downloads/fastmail-mcp/. download_attachment savePaths are confined to this directory; set it to the root you want attachments saved under to write there directly in one step. | ~/Downloads/fastmail-mcp/ |
| FASTMAIL_CALDAV_PASSWORD | No | CalDAV password (app-specific password). Required for calendar tools. | |
| FASTMAIL_CALDAV_USERNAME | No | CalDAV username (use an app-specific password). Required for calendar tools, since calendar access is not available via JMAP API tokens. | |
| FASTMAIL_WEBDAV_PASSWORD | No | WebDAV password. Required for save_attachment_to_webdav. | |
| FASTMAIL_WEBDAV_USERNAME | No | WebDAV username. Required for save_attachment_to_webdav. | |
| FASTMAIL_CALDAV_DISPLAY_NAME | No | CalDAV display name. Optional; used for calendar tools. | |
| FASTMAIL_ALLOW_UNSAFE_BASE_URL | No | Set to true to allow a custom base URL when pointing at a self-hosted JMAP server. | false |
Instructions
Guidance the server publishes about itself, which clients place ahead of the tool catalog so the model reads it before choosing anything.
This server publishes no instructions, or was last inspected before Glama recorded them.
Capabilities
Server capabilities have not been inspected yet.
Tools
Functions exposed to the LLM to take actions
| Name | Description |
|---|---|
No tools | |
Prompts
Interactive templates invoked by user choice
| Name | Description |
|---|---|
No prompts | |
Resources
Contextual data attached and managed by the client
| Name | Description |
|---|---|
No resources | |
This server cannot be deployed
Maintenance
ActivityActive
ResponsivenessNo issues