Fastmail MCP Server
Server Configuration
Describes the environment variables required to run the server.
| Name | Required | Description | Default |
|---|---|---|---|
| FASTMAIL_BASE_URL | No | Optional: customize the base URL (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) as returned by JMAP session discovery. | https://api.fastmail.com |
| FASTMAIL_API_TOKEN | Yes | Your Fastmail API token. Generated in the Fastmail web interface under Settings → Privacy & Security → Connected apps & API tokens → Manage API tokens → New API token. | |
| FASTMAIL_WEBDAV_URL | No | Optional WebDAV storage server URL — required for save_attachment_to_webdav (e.g. Fastmail Files, Nextcloud). | |
| FASTMAIL_DOWNLOAD_DIR | No | Optional: customize the 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 | Optional CalDAV password — required for calendar tools (use an app-specific password, not your main account password). | |
| FASTMAIL_CALDAV_USERNAME | No | Optional CalDAV username — required for calendar tools (use an app-specific password). | |
| FASTMAIL_WEBDAV_PASSWORD | No | Optional WebDAV password — required for save_attachment_to_webdav. | |
| FASTMAIL_WEBDAV_USERNAME | No | Optional WebDAV username — required for save_attachment_to_webdav. | |
| FASTMAIL_CALDAV_DISPLAY_NAME | No | Optional CalDAV display name used for calendar operations. | |
| FASTMAIL_ALLOW_UNSAFE_BASE_URL | No | Set to true for self-hosted JMAP servers to allow base URLs other than the default allowlisted hosts. |
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
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