How to use Fastmail in ChatGPT, Perplexity, or Claude

You can easily integrate Fastmail into Claude, Perplexity, or ChatGPT by turning the Fastmail MCP into a remote MCP connector using MCP Nest. This guide shows you how to use the MadLlama25/fastmail-mcp repository to set this up.

Quick Deploy

Deploy the Fastmail MCP server to MCP Nest with one click:

Once connected, your AI assistant can read, search, and send emails through Fastmail.

1. Create a New Config in MCP Nest

Go to your MCP Nest dashboard and click Create MCP Deployment.

Command: npx Args: github:MadLlama25/fastmail-mcp

Environment Variables:

You can generate an API token from your Fastmail settings.

Save and deploy.

2. Connect to Claude, ChatGPT, or Perplexity

Once your Fastmail MCP is running on MCP Nest, you can connect it as a remote MCP connector.

Connecting to Claude

1. Navigate to your Claude.ai connector settings page: https://claude.ai/settings/connectors.
2. Click the Add Custom Connector button.
3. Fill in the details:
   • Name: Fastmail via MCP Nest
   • Remote URL: https://mcp.mcpnest.dev/mcp (or your specific deployment URL provided by MCP Nest)
4. Click Add and then click the Connect button next to it in the list to authorize the connection.

Connecting to ChatGPT

1. In ChatGPT, you can use this as a remote MCP connector if you are setting up a custom GPT or using the MCP integrations depending on the client.
2. Point the connector to your MCP Nest remote URL and authorize it.

Connecting to Perplexity

1. Navigate to your Perplexity account connectors page: https://www.perplexity.ai/account/connectors.
2. Look for the option to add a new custom connector.
3. Provide your MCP Nest remote URL as the connection point.
4. Authorize the connection as prompted.

Once connected, you can simply ask your chosen AI assistant to read your emails, draft responses, or search your Fastmail inbox using the new remote MCP connector!