What is the main functional difference between Microsoft Outlook MCP and OpenMail?

Microsoft Outlook MCP is categorized under Communication and uses a local stdio subprocess. OpenMail belongs to Communication and uses an install path we have not confirmed yet. Pick Microsoft Outlook MCP for communication work and OpenMail for communication.

How do I install Microsoft Outlook MCP or OpenMail in Claude Desktop, Cursor, or Windsurf?

Copy the mcpServers block from the config section on this page into your client's config (for example claude_desktop_config.json or ~/.cursor/mcp.json), then fully restart the client. OpenMail has no confirmed install command yet — follow its own setup instructions.

Are Microsoft Outlook MCP and OpenMail free to use, or do they require API keys?

Microsoft Outlook MCP has no declared pricing — check the project's own site. OpenMail is listed as free. Auth: oauth 2.0. If a server needs environment variables such as API keys, define them under the env key in your client's MCP config.

Can I run both Microsoft Outlook MCP and OpenMail at the same time in my AI client?

Yes. MCP clients support multiple servers: add microsoft-outlook-mcp and openmail as separate keys in the same mcpServers object, and your assistant will call tools from either one.

Which MCP server has higher directory engagement and quality ratings?

On AllMCPs, Microsoft Outlook MCP has a quality signal of 39/100 (Fair) with 1 views, 0 installs and 0 GitHub stars. OpenMail has 36/100 (Fair) with 0 views, 0 installs and 0 GitHub stars.

Microsoft Outlook MCP vs OpenMail

Microsoft Outlook MCP vs OpenMail | AllMCPs

Feature & specification comparison

Rows where the two servers differ are marked.

Spec	Microsoft Outlook MCP	O OpenMail
Category	Communication	Communication
Quality signal	39/100 · Fair	36/100 · Fair
Install command	Confirmed	Not confirmed yet
Transport	Local subprocess (stdio)	—
Auth	Not declared	OAuth 2.0
Pricing	Not declared	Free
Required env vars	`MICROSOFT_CLIENT_IDMICROSOFT_TENANT_IDMICROSOFT_ACCESS_TOKENMCP_TRANSPORTPORT`	`OPENMAIL_API_URLMCP_RESOURCE_URLMCP_JWT_SECRETCONSOLE_ORIGINPORTPOSTHOG_API_KEYMCP_ANALYTICS_DEBUG`
Verified owner	Community listing	Community listing
GitHub stars	0	0
Directory activity	1 views 0 installs 0 upvotes	0 views 0 installs 0 upvotes
Tools	Not listed	Not listed
Full listing	View Microsoft Outlook MCP	View OpenMail

Ready-to-paste client configs

Paste either block (or both) into your client config, e.g. claude_desktop_config.json or ~/.cursor/mcp.json. We only show a config when the install command is confirmed.