Fastmail MCP Server (Unofficial)
Server Configuration
Describes the environment variables required to run the server.
| Name | Required | Description | Default |
|---|---|---|---|
| FASTMAIL_BASE_URL | No | Optional custom 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. For self-hosted JMAP servers, also set FASTMAIL_ALLOW_UNSAFE_BASE_URL=true. | https://api.fastmail.com |
| FASTMAIL_API_TOKEN | Yes | Your Fastmail API token (created in Settings → Privacy & Security → Connected apps & API tokens → Manage API tokens). Used for bearer token authentication with the Fastmail JMAP API. | |
| FASTMAIL_DOWNLOAD_DIR | No | Optional 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_ALLOW_UNSAFE_BASE_URL | No | Set to true to allow a self-hosted JMAP server base URL that is not api.fastmail.com or www.fastmailusercontent.com. | 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
ActivityMaintained
ResponsivenessResponsive