MCP Server for Multiple Outlook Accounts
Server Configuration
Describes the environment variables required to run the server.
| Name | Required | Description | Default |
|---|---|---|---|
| OUTLOOK_MCP_DATA_DIR | No | Directory for tokens and app-registration configs | ~/.outlook-mcp |
| OUTLOOK_OAUTH_CREDENTIALS | No | Pin one app registration (disables discovery) | |
| OUTLOOK_MCP_ATTACHMENTS_DIR | No | Allow-list for path attachments | |
| OUTLOOK_MCP_LOCK_TIMEOUT_MS | No | Token-store lock wait timeout in milliseconds | 12000 |
| OUTLOOK_MCP_REQUEST_TIMEOUT_MS | No | Per-Graph-call timeout in milliseconds | 30000 |
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
Features and capabilities supported by this server
Protocol revision2025-11-25
| Capability | Details |
|---|---|
| tools | {
"listChanged": true
} |
Tools
Functions exposed to the LLM to take actions
| Name | Description |
|---|---|
| list_accountsA | List the Outlook / Microsoft 365 mailboxes connected to this server. Use the returned identities as the 'account' selector for other 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 | |
TDQS
Scored across 1 tool
With only one tool, there is no possibility of ambiguity. Agents will always select list_accounts when any tool is needed.
The single tool follows a clear verb_noun pattern (list_accounts), making its purpose immediately understandable.
A single listing tool is far too few for a server purporting to handle multiple Outlook accounts. The user would expect tools for email operations, calendar management, or at least sending/reading messages.
The server only lists accounts and provides no way to actually interact with them. There are obvious missing operations like read_email, send_email, search_mailbox, or manage folders, leaving the surface severely incomplete.