mailsocket vs Agent Identity
mailsocket is an MCP server published by mailsocket.app. Marketplaces we read that list it: 2 (Official MCP Registry, PyPI (MCP servers)). Agent Identity is an MCP server published by agent-identity.dev. Marketplaces we read that list it: 1 (Official MCP Registry). As of our marketplace pass on 2026-11-08. This pair was picked by a reader, not by our comparison rule, so search engines are asked not to index the page.
Where each is published
| Marketplace |  mailsocket |  Agent Identity |
|---|---|---|
| Official MCP Registry | Listed Version: 0.4.2 Downloads/month (PyPI): 861 Downloads/week (PyPI): 1 892 Forks (GitHub): 0 Stars (GitHub): 0 Not marked · First seen |
Listed Version: 0.3.0 No figure published Not marked · First seen |
| PyPI (MCP servers) | Listed Version: 0.4.2 Downloads/month (PyPI): 861 Downloads/week (PyPI): 1 892 Forks (GitHub): 0 Stars (GitHub): 0 Not marked · First seen |
Not listed |
Each figure is the marketplace's own and is never added up across marketplaces. A marketplace that publishes no figure shows none: no number is not zero.
The facts side by side
| Fact | mailsocket | Agent Identity |
|---|---|---|
| Marketplaces that list it (differs) | 2 (better) | 1 (worse) |
| Stars (GitHub) (differs) | 0 | No figure on GitHub |
| Forks (GitHub) (differs) | 0 | No figure on GitHub |
| Last release (differs) | 2026-11-01 | Not published |
| Where it runs (differs) | Remote server or your machine | Remote server (mcp.agent-identity.dev/mcp) |
| Transport | Streamable HTTP | Streamable HTTP |
| Tools it declares | Not published | Not published |
| Environment variables it asks for (differs) | 2, secrets among them: 1 | Not published |
| Licence (differs) | MIT | Not stated |
| Repository (differs) | github.com/mailsocket/mailsocket-sdk | Not stated |
| Changes in the last 7 days (differs) | 3 | 0 |
| First seen (differs) | 2026-10-11 | 2026-10-24 |
| Endpoint at the last check (differs) | Responded 26 h ago, requires authentication | Status out of date: last check 2 days ago returned HTTP 405 |
Lines where the two differ have a tinted background and bold values. Where the data itself says which value is better (more marketplaces, a larger figure of the same marketplace, a fresher release, a verified mark on a marketplace that lists both), the better one is also marked green with ▲ and the worse one red with ▼. Where it runs, the transport, the tools, the settings, hooks, the bundle's parts, the licence and the week's changes are marked only as different: more or fewer is not better in itself.
What each says it does
mailsocket
Test inboxes for AI agents testing your app: block until the OTP or magic link arrives.
Agent Identity
Give your AI agent its own email inbox, phone number and agent-to-agent tasks.
How to run each
mailsocket As a remote MCP server
claude mcp add --transport http mailsocket-mcp https://mcp.mailsocket.app/mcp --header "Authorization: Bearer <YOUR_TOKEN>"Requires: MAILSOCKET_API_KEY (secret), Authorization header
Agent Identity As a remote MCP server
claude mcp add --transport http agent-identity https://mcp.agent-identity.dev/mcpCommands built only from what the marketplaces declare; the full set for every client is on each card.
Both endpoints responded at the last daily check. How we check endpoints
Tools each declares
Neither one's marketplaces publish a list of tools, so there is nothing to compare.
Settings each asks for
The marketplaces of Agent Identity publish no settings it asks for, so we do not compare settings.
What it can do: mailsocket · What it can do: Agent Identity · Compare two other plugins
Data comes from the Official MCP Registry (registry.modelcontextprotocol.io), CC0 1.0. Package data comes from the Python Package Index (pypi.org). Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.