Code Base
Open-Source Email Tools by Postbox Services
Code we have written for our own work and made free for yours. Everything here is MIT licensed: use it, change it and build on it. Questions, bugs and improvements are welcome on GitHub.
email-agent-send-gateNew · v0.1.0
A send gate for AI email agents: the agent drafts, the gate decidesThe only service that holds your email provider's credentials. Every request passes the same checks: a suppression list nothing can bypass, low caps per person, company and domain, honest identity, one-click unsubscribe (RFC 8058), a human review queue and dry run on by default. Comes with a working prospecting agent built on Claude. Python, MIT licensed.postbox-mcpDocs
Listing and setup docs for our email deliverability MCP serverThe public face of the Postbox Services MCP server: how to connect it to Claude, ChatGPT, Grok, Cursor and other AI assistants, and the registry listing. The server itself is hosted by us at https://mcp.postboxservices.com/mcp, free and with no account. MIT licensed.Listed in
- awesome-remote-mcp-servers, the curated list of remote MCP servers.
- The official MCP Registry, as
com.postboxservices/postbox-tools.
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