Summary
This gives Claude command-line control over AgentMail's programmable email service. You get the full suite: create inboxes on the fly, send and receive messages, manage threads and drafts, set up webhooks for incoming mail, and even configure custom domains if you've verified them. The pod system lets you group related inboxes together, which is handy for multi-agent setups. It's built for agents that need real email addresses to interact with external services or users, not just API calls pretending to be email. Requires an API key and the npm package installed globally. Output formatting is flexible with JSON, YAML, or pretty-printed options.
Install to Claude Code
npx -y skills add agentmail-to/agentmail-skills --skill agentmail-cli --agent claude-codeInstalls into .claude/skills of the current project.
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SKILL.mdView on GitHub
AgentMail CLI
Install the CLI and provide the API key through the environment.
npm install -g agentmail-cli
export AGENTMAIL_API_KEY="am_..."
Subcommands for a resource nested under another use a colon, e.g. inboxes:messages, inboxes:threads, pods:inboxes, pods:threads.
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.
Featured
belt cli automatically finds the best tools and skills for your agent. image, video, music, tts...
one prompt install →Plug Mailtrap into your AI workflow and let it handle the email.
Connect Mailtrap MCP →Agent, run crypto. Access onchain data & trade routes via 1inch.
Install now →Make coding agent sessions - Searchable, Shareable, Vendor-neutral & Scored.
Try For Free →Your agent targets a perfect 10 Code Health score. Deterministic. Every commit.
Try For Free →Integrate web data into your AI product. One API to scrape website & brand data.
Get API Key Now →
