Added

• Downloadable zips on each GitHub Release: machinemail-agent-plugin.zip with the whole plugin, and one machinemail-skill-<name>.zip per skill for upload to claude.ai and Claude Desktop, with SHA256SUMS and manifest.json. The file names carry no version, so releases/latest/download/<file> always gets the latest release.
• A release workflow (.github/workflows/release.yml) that runs on v*.*.* tags, and scripts/package.mjs, which builds the zips reproducibly.
• scripts/check.mjs also checks that CHANGELOG.md has a section for the version in plugin.json.

Changed

• Synced all five skills with machinemail/skills, where they were fact-checked against the MachineMail source. Each skill is now version 1.0.0 with a docs homepage. Notable corrections: auth.md and its endpoints live on api.machinemail.dev; register-agent-inbox now first checks for a signed-in MCP server or an API key before self-registering; sandbox limits (10 messages to 10 distinct recipients per 24 hours, 5 recipients per message, inbox kept 24 hours after its last mail); known-sender code checks accept dmarc: none with a DKIM pass; reply-all and draft-reply recipients; spam and unauthenticated mail is listed over MCP when filtered by label.
• The skills refer to companion skills (machinemail, machinemail-mcp, machinemail-agent-signup) that this plugin does not bundle. The README links to machinemail/skills and skills.sh for them, and scripts/check.mjs accepts references to them.

Install

The plugin needs a MachineMail account. Sign up at https://machinemail.dev. The first time the agent uses a MachineMail tool, your client asks you to sign in.

• Claude Code: claude plugin marketplace add machinemail/agent-plugin, then claude plugin install machinemail@machinemail. To install from the zip instead, unzip it and run claude plugin marketplace add ./machinemail.
• Codex: codex plugin marketplace add machinemail/agent-plugin, or codex plugin marketplace add ./machinemail from the unzipped plugin.
• claude.ai and Claude Desktop: download a machinemail-skill-<name>.zip below and upload it under Customize > Skills. Connect the MCP server https://mcp.machinemail.dev/mcp as a custom connector so the skills have tools to call.
• Other Agent Plugins clients (VS Code, GitHub Copilot CLI, Cursor and more): install from https://github.com/machinemail/agent-plugin, or unzip machinemail-agent-plugin.zip and point the client at the machinemail/ folder.

See the README for each client: https://github.com/machinemail/agent-plugin#install

Assets