agentmail-cli
Operate AgentMail from a shell with the official CLI. Use when the user wants commands for listing or creating inboxes, reading or searching mail, sending or replying, managing drafts, or scripting JSON/YAML output; do not use for SDK code, MCP setup, or framework adapters.
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Install
Works with every agent the skills CLI supports.
npx skills add https://github.com/agentmail-to/agentmail-skills --skill agentmail-cli- 01
Install
Run the command in your project. The CLI asks which agents to install for.
- 02
Describe the task
Ask your agent for something this skill covers. It loads agentmail-cli automatically when relevant.
- 03
Review the result
The agent follows the SKILL.md steps, scripts and references bundled with the skill.
SKILL.md
The instructions your agent reads when the skill is triggered.
AgentMail CLI
Install the CLI and provide the API key through the environment.
npm install -g agentmail-cli
export AGENTMAIL_API_KEY="am_..."
A resource nested under another is a nested subcommand, e.g. inboxes messages, inboxes threads, pods inboxes, pods threads (CLI 1.x; the colon form inboxes:messages is rejected). Run agentmail <resource> --help to list what a resource supports.
Inboxes
agentmail inboxes list
agentmail inboxes get --inbox-id <inbox_id>
agentmail inboxes create --display-name "Support Agent" --username support
agentmail inboxes delete --inbox-id <inbox_id>
Confirm the exact inbox before running the destructive delete command.
Messages and threads
agentmail inboxes messages list --inbox-id <inbox_id>
agentmail inboxes messages get --inbox-id <inbox_id> --message-id <message_id>
agentmail inboxes messages send --inbox-id <inbox_id> \
--to "recipient@example.com" \
--subject "Hello" \
--text "Message body"
# HTML body instead of plain text
agentmail inboxes messages send --inbox-id <inbox_id> \
--to "recipient@example.com" \
--subject "Hello" \
--html "<h1>Hello</h1>"
agentmail inboxes messages reply --inbox-id <inbox_id> \
--message-id <message_id> \
--text "Reply body"
agentmail inboxes messages forward --inbox-id <inbox_id> \
--message-id <message_id> \
--to "someone@example.com"
agentmail inboxes threads list --inbox-id <inbox_id>
agentmail inboxes threads get --inbox-id <inbox_id> --thread-id <thread_id>
Use a message ID for replies. Fetch the full message before relying on body content.
Drafts
agentmail inboxes drafts create --inbox-id <inbox_id> \
--to "recipient@example.com" \
--subject "Pending approval" \
--text "Draft body"
agentmail inboxes drafts list --inbox-id <inbox_id>
agentmail inboxes drafts get --inbox-id <inbox_id> --draft-id <draft_id>
agentmail inboxes drafts send --inbox-id <inbox_id> --draft-id <draft_id>
Pods
Pods group inboxes together.
agentmail pods create --name "My Pod"
agentmail pods list
agentmail pods inboxes create --pod-id <pod_id> --display-name "Pod Inbox"
agentmail pods inboxes list --pod-id <pod_id>
agentmail pods threads list --pod-id <pod_id>
agentmail pods threads get --pod-id <pod_id> --thread-id <thread_id>
Webhooks
agentmail webhooks create --url "https://example.com/webhook" --event-type message.received
agentmail webhooks list
Domains
agentmail domains create --domain example.com
# Optional: route bounce/complaint notifications to your inboxes.
agentmail domains create --domain example.com --feedback-enabled
agentmail domains verify --domain-id <domain_id>
agentmail domains get-zone-file --domain-id <domain_id>
Global flags
| Flag | Purpose |
|---|---|
--api-key | Override AGENTMAIL_API_KEY for this call |
--base-url | Point at a non-default API host |
--environment | Select a named environment |
--format | Output format (see below) |
--format-error | Control structured error output |
--transform | GJSON projection of a successful response |
--transform-error | GJSON projection of an error response |
--debug | Verbose request/response logging |
Output formats
--format accepts: auto (default), pretty, json, jsonl, yaml, raw, explore.
Run agentmail --help and the relevant resource's --help before using an administrative command not covered here.
FAQ
What does the agentmail-cli skill do?
Operate AgentMail from a shell with the official CLI. Use when the user wants commands for listing or creating inboxes, reading or searching mail, sending or replying, managing drafts, or scripting JSON/YAML output; do not use for SDK code, MCP setup, or framework adapters.
How do I install agentmail-cli?
Run npx skills add https://github.com/agentmail-to/agentmail-skills --skill agentmail-cli in your project. The skills CLI detects the agents you use and copies the skill into the right folder. For Claude Code you can also place the skill folder at ~/.claude/skills/agentmail-cli/ (personal) or .claude/skills/agentmail-cli/ (project).
Which AI agents can use agentmail-cli?
Any agent that supports the open Agent Skills format (a folder with a SKILL.md file), including Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, Windsurf, Cline, OpenCode and more.
Is agentmail-cli safe to install?
No partner security audit is available yet. Skills can run commands and scripts, so read the SKILL.md and any bundled files before installing.
Who maintains agentmail-cli?
It is published by agentmail-to in agentmail-to/agentmail-skills. It has 1,652 recorded installs.
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