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agentmail

v0.2.1

Give an agent its own email address. Send and receive email through the AgentMail API via the official agentmail CLI: create inboxes, send mail, read incoming messages and threads, reply / reply-all / forward, manage and schedule drafts, triage an inbox, keep a local address book of people and other agents, relay tagged work orders to another AI agent, and run the agent self-signup and OTP verification flow. Ships an opt-in hook that notices unread mail during a session. Triggers on mentions of AgentMail, agent email, inbox creation, sending or checking email for an agent, contacts or address lookup, inbox triage, and emailing another agent.

Claude Code5 Skills

By JT Sternberg5 GitHub starsUpdated 2 days ago

Directory evidence

Runtimes
Claude Code
Parsed components
5 skill or MCP entries
Source updated
Sep 21, 2026
Manifest status
Canonical path parsed

The directory validates manifest shape and source location. It does not execute the plugin or provide a security endorsement. Review the indexing methodology →

Install agentmail for Claude Code

Installs for the current user
claude plugin marketplace add IchenDEV/agent-plugin-mkt
claude plugin marketplace update agent-plugin-marketplace
claude plugin install agentmail-2@agent-plugin-marketplace

Paste and run these commands in a terminal with Claude Code. They add and refresh the PluginsMP catalog, then install this plugin.

The installer fetches third-party code from the source repository shown on this page. This directory validates manifest structure and source location, but does not perform a security audit; review the manifest, components, and source before installing.

Get the source manually
git clone https://github.com/jtsternberg/claude-plugins

Clone the source repository, then follow its setup instructions to add the plugin to a compatible client. The plugin root is plugins/agentmail/.

Plugin files

plugins/agentmail/
├── .claude-plugin/plugin.json
├── skills/check-mail/SKILL.md
├── skills/contacts/SKILL.md
├── skills/relay-work-order/SKILL.md
├── skills/replying/SKILL.md
└── skills/using-agentmail/SKILL.md

Included Skills5

check-mailskills/check-mail/SKILL.md

Check an AgentMail inbox and triage it — list unread or recent mail, read full message bodies rather than previews, and classify each one as actionable, needs-reply, FYI, or spam with a proposed next step. Also turns the periodic unread reminder on or off. Triggers on: check my mail, any new mail, what is in the inbox, unread messages, read that email, triage the inbox, anything I need to deal with.

contactsskills/contacts/SKILL.md

Address book for agent email — add, list, update, remove, and look up contacts (people and other agents) by name, alias, or address, so an AgentMail send goes to a verified address instead of a remembered one. Records how each email address was confirmed. Triggers on: what is X's email, who is X, add a contact, list contacts, update a contact, remove a contact, look up an address, which inbox does that agent use.

relay-work-orderskills/relay-work-order/SKILL.md

Hand work to another AI agent over AgentMail email, or act on a work order that arrived that way, using the agreed protocol: a [HANDOFF] / [ASK] / [FYI] / [DONE] subject tag and a Goal / Context / Needed / Refs body. Destructive or outward-facing actions never happen off an email alone. Triggers on: email ChatGPT, send a handoff to the other agent, relay this task, ask the other agent, delegate by email, act on that handoff, close the loop.

replyingskills/replying/SKILL.md

Answer AgentMail messages in thread — reply to the sender, reply-all to everyone on the thread, or forward to someone new, with a reviewable draft for anything consequential. Counts recipients before a reply-all and never retries a failed send. Triggers on: reply to that email, answer this message, reply all, forward this, draft a response, respond in the thread, send a reply.

using-agentmailskills/using-agentmail/SKILL.md

Send and receive email for an AI agent via the AgentMail API and `agentmail` CLI — create inboxes, send, read messages and threads, reply/forward, manage drafts, run agent self-signup + OTP verification. Also fires when the agent is asked about its own email identity ('what is your email address?', 'do you have an inbox?') — answer from `agentmail inboxes list`, not session context.

Plugin manifests1

plugins/agentmail/.claude-plugin/plugin.json
{
  "name": "agentmail",
  "description": "Give an agent its own email address. Send and receive email through the AgentMail API via the official agentmail CLI: create inboxes, send mail, read incoming messages and threads, reply / reply-all / forward, manage and schedule drafts, triage an inbox, keep a local address book of people and other agents, relay tagged work orders to another AI agent, and run the agent self-signup and OTP verification flow. Ships an opt-in hook that notices unread mail during a session. Triggers on mentions of AgentMail, agent email, inbox creation, sending or checking email for an agent, contacts or address lookup, inbox triage, and emailing another agent.",
  "version": "0.2.1",
  "author": {
    "name": "JT Sternberg",
    "url": "https://github.com/jtsternberg"
  }
}

For maintainers

If you maintain this plugin, link to this source-backed listing from your README so users can review its manifest and indexed components.

[agentmail on Agent Plugins Marketplace](https://pluginsmp.com/plugins/agentmail-2)