OpenAI plugin package ("Any Mailbox")
Source of the ZIP uploaded at platform.openai.com/plugins. The portal takes the listing, MCP auth settings, test cases and release notes from this package. Reviewer credentials are entered in the portal, never here.
To build a new version, bump version, update release_notes, then run this
from this folder and upload any-mailbox.zip under "Upload new version":
zip -r -X ../any-mailbox.zip plugin.json mcp.json assets
Tool changes need no upload: deploy the server, then press Rescan on the MCPs tab.