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Sickle — every mailbox for your agent

Official registry Productivity

Gmail, Outlook, iCloud, Fastmail and any IMAP mailbox for your agent. Scoped OAuth, approved sends.

Website

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

Remote (streamable-http)
Claude Code 
claude mcp add --transport http sickle-every-mailbox-for-your-agent 'https://mcp.sickle.app'
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "sickle-every-mailbox-for-your-agent": {
            "type": "http",
            "url": "https://mcp.sickle.app"
        }
    }
}

Frequently asked questions

What is Sickle — every mailbox for your agent?

Gmail, Outlook, iCloud, Fastmail and any IMAP mailbox for your agent. Scoped OAuth, approved sends.

How do I install Sickle — every mailbox for your agent?

It runs as a remote server. In Claude Code: claude mcp add --transport http sickle-every-mailbox-for-your-agent 'https://mcp.sickle.app'. For other clients, paste the JSON configuration from this page into their MCP settings.

Does Sickle — every mailbox for your agent need an API key?

Its registry entry lists no required key or secret. Some features may still need an account with the service it connects to.

Who maintains Sickle — every mailbox for your agent?

It is published by app.sickle. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.