Eliaš IT Solutions

Mailbox access for AI clients

This server lets an application you trust read and write mail in your mailbox, once you have allowed it. Connecting is started from that application, not from here.

Sign in

Connect an application

Add this server to your AI client as a custom connector, then sign in with the e-mail address and password of your mailbox.

Server address

https://mailcow-mcp.elias-itsolutions.sk/mcp/mail
Claude — web and desktop app
  1. Open Claude in a browser or in the desktop app and go to Settings → Connectors.
  2. Choose “Add custom connector”, paste the server address above and save it.
  3. Click “Connect”. Claude sends you here; sign in to your mailbox and allow the access.
  4. The mail tools then show up in a conversation under this connector.

On Team and Enterprise plans an owner adds the connector once in Organization settings → Connectors; everyone else only clicks “Connect”.

Claude Code — terminal
  1. Run this in the project you want the mailbox available in: 
    claude mcp add --transport http mailcow https://mailcow-mcp.elias-itsolutions.sk/mcp/mail
  2. Run /mcp in Claude Code, pick the server and finish signing in in the browser window that opens.

Add --scope user to the command to have the mailbox available in every project.

ChatGPT — web and desktop app
  1. Switch developer mode on first. Without it ChatGPT does not offer custom connectors at all: Settings → Apps & Connectors → Advanced settings → Developer mode.
  2. Go to Settings → Apps & Connectors → Create, fill in a name and description, paste the server address above and pick OAuth as the authentication.
  3. Confirm the connector, sign in to your mailbox here and allow the access.
  4. In a conversation, switch the connector on under “Developer mode” in the message box.

Developer mode is available on the Plus, Pro, Business and Enterprise plans. In a Business or Enterprise workspace an administrator has to allow it before the toggle appears.

If a client reports that the redirect address was rejected, its domain is missing from the list this server allows. Tell whoever runs the server.