agentmail

agentmail is an open-source integrations skill for Claude Code and compatible agents, published by sickn33. Its author describes it as: “Email infrastructure for AI agents. Create accounts, send/receive emails, manage webhooks, and check karma balance via the AgentMail API.”. The project has 45k stars on GitHub and is available under the MIT license. Add it to your setup with `/plugin marketplace add sickn33/agentic-awesome-skills`.

What agentmail does

AgentMail gives AI agents real email addresses (`@theagentmail.net`) with a REST API. Agents can send and receive email, sign up for services (GitHub, AWS, Slack, etc.), and get verification codes. A karma system prevents spam and keeps the shared domain's reputation high.

Installation

Add agentmail to your agent with:

/plugin marketplace add sickn33/agentic-awesome-skills

Always review a skill's source before installing it. This command comes from the skill's public repository; the linked repo is the source of truth for exact setup steps.

What's inside

The SKILL.md for agentmail is organised into these sections:

• When to Use
• Quick start
• Create an email account (-10 karma)
• Send email (-1 karma)
• Read inbox
• Check karma
• Register webhook (real-time inbound)
• Download attachment
• Full API reference
• Karma system
• TypeScript SDK
• Error handling

When to use it

Reach for agentmail when you want integrations help from your agent without writing the same instructions every session. Load the skill and the agent picks it up automatically for relevant tasks.

Strengths

• Clear MIT license — safe to read and adapt
• Ships in sickn33/agentic-awesome-skills, an established project with 45,044 GitHub stars
• Actively maintained (recent commits)

Topics

Frequently asked questions

What does agentmail do?

Email infrastructure for AI agents. Create accounts, send/receive emails, manage webhooks, and check karma balance via the AgentMail API.

How do I install agentmail?

Run /plugin marketplace add sickn33/agentic-awesome-skills in your agent, then reload your skills. Review the source at https://github.com/sickn33/agentic-awesome-skills before installing.

Is agentmail free to use?

Yes. agentmail is free and open source under the MIT license, so you can read, run, and adapt it within that license's terms.

Where does agentmail come from?

agentmail ships inside sickn33/agentic-awesome-skills, a repository that contains 66 catalogued skills in total. The repository's 45,044 GitHub stars apply to that whole collection, not to this skill on its own.