What is the key difference between Agent Mail Gateway and Proton Mail MCP?

Agent Mail Gateway belongs to the Communication category with cloud HTTP/SSE execution, while Proton Mail MCP belongs to the Communication category with local stdio execution.

How do I install Agent Mail Gateway or Proton Mail MCP in Claude Desktop or Cursor?

Copy the mcpServers JSON configuration snippet provided on this page into your claude_desktop_config.json or ~/.cursor/mcp.json file and restart your AI client.

Are Agent Mail Gateway and Proton Mail MCP free or paid?

Agent Mail Gateway operates under a Free / Open Source model (No auth required). Proton Mail MCP operates under a Free / Open Source model (other).

Which MCP server has more tools and community activity?

Agent Mail Gateway lists 10 tools with 0 views and 11 GitHub stars. Proton Mail MCP lists 32 tools with 1 views and 6 GitHub stars.

Can I use both Agent Mail Gateway and Proton Mail MCP together in the same MCP host?

Yes! MCP hosts like Claude Desktop, Cursor, Windsurf, Cline, and VS Code support configuring multiple servers under the mcpServers object simultaneously.

Side-by-Side Model Context Protocol Comparison

Agent Mail Gateway vs Proton Mail MCP

In-depth architectural comparison of the Agent Mail Gateway and Proton Mail MCP MCP servers. Compare execution transports, security boundaries, tool capabilities, quality scores, and ready-to-paste client installation snippets for Claude, Cursor, Windsurf, and VS Code.

At a Glance & Executive Verdict

Agent Mail Gateway

Communication · Remote HTTP/SSE

Quality: 55/100 (Good) | Auth: No auth required

Proton Mail MCP

Communication · Local stdio

Quality: 63/100 (Good) | Auth: other

Verdict Summary: Choose Agent Mail Gateway if you need specialized Communication tools running via a hosted cloud SSE transport. Choose Proton Mail MCP if your workspace requires Communication integration with local subprocess execution. Both servers can be configured concurrently in your client's mcpServers manifest.

Which MCP Server Should You Choose?

Choose Agent Mail Gateway when:

You need dedicated capabilities in the Communication domain.
You prefer remote streaming HTTP/SSE transport architecture.
Your security boundary fits: No auth required (Free / Open Source).
You have access to required keys: AGENT_API_KEY, AGENT_MAIL_PASSWORD.
Primary tools included: get_mailbox_info, list_messages, read_message.

Explore Agent Mail Gateway Details

Choose Proton Mail MCP when:

You need dedicated capabilities in the Communication domain.
You prefer local stdio subprocess transport architecture.
Your security boundary fits: other (Free / Open Source).
You have access to required keys: PROTONMAIL_USERNAME, PROTONMAIL_PASSWORD, READONLY, ALLOW_FILE_DOWNLOAD_DIR, ALLOW_EMPTY_FOLDER, RESTRICT_OUTBOUND_TO_SELF.

Feature & Specification Comparison

Specification	A Agent Mail Gateway Communication	Proton Mail MCP sethbang Communication
Summary	Self-hosted email for AI agents: own IMAP/SMTP mailbox per key, allow lists, calendar invites.	Unofficial Proton Mail MCP server — send, read, search, and organize email over SMTP and IMAP (via Proton Mail Bridge). Bulk ops with dry-run previews, read-only mode, and Trash-by-default deletes. Not affiliated with Proton AG.
Category & Scope	Communication

Tools & Capabilities Breakdown

Agent Mail Gateway Tools (10)

get_mailbox_info

Own address, current date and time, allow lists, limits and the review rules/policies

list_messages

Received mail, newest first; filter by unread, or search by text, sender, subject, date

read_message

One message as Markdown, incl. attachments list and received invitations

get_attachment

Download an attachment

mark_message

Mark read/unread; move to Trash (if allowed)

send_message

Send a new email (Markdown, attachments)

Ready-to-Paste Client Configurations

Paste either (or both) of these JSON server blocks into your client config file (e.g. claude_desktop_config.json or ~/.cursor/mcp.json).

Agent Mail Gateway Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "agent-mail-gateway": {
      "url": "http://localhost:8080/v1/messages"
    }
  }
}

Proton Mail MCP Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "sethbang-proton-mail-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "proton-mail-mcp"
      ],
      "env": {
        "PROTONMAIL_USERNAME": "YOUR_PROTONMAIL_USERNAME_HERE",
        "PROTONMAIL_PASSWORD": "YOUR_PROTONMAIL_PASSWORD_HERE",
        "READONLY": "YOUR_READONLY_HERE",
        "ALLOW_FILE_DOWNLOAD_DIR": "YOUR_ALLOW_FILE_DOWNLOAD_DIR_HERE",
        "ALLOW_EMPTY_FOLDER": "YOUR_ALLOW_EMPTY_FOLDER_HERE",
        "RESTRICT_OUTBOUND_TO_SELF": "YOUR_RESTRICT_OUTBOUND_TO_SELF_HERE"
      }
    }
  }
}

Frequently Asked Questions

Agent Mail Gateway is categorized under Communication and uses a remote streaming HTTP/SSE transport. In contrast, Proton Mail MCP belongs to Communication using local stdio subprocess. Select Agent Mail Gateway when you need capabilities focused on communication and Proton Mail MCP when you require tools for communication.

More alternatives to Agent Mail Gateway More alternatives to Proton Mail MCP Communication category hub