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atomicmail

Read and write email through the Atomic Mail from an AI agent.

Skill by Atomic-Mail

IndexedMIT★ 264
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Install

Works with Claude Code, Claude apps, Codex, Cursor, Gemini CLI, GitHub Copilot, VS Code, OpenCode, Goose, Windsurf. Read the repository before you give any tool access to your data.

npx agentmarket install skill/atomic-mail-atomicmail-cf03c4

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About

Read and write email through the Atomic Mail from an AI agent. Handles proof-of-work authentication and JMAP so the agent thinks in JMAP method calls. Use when the user asks to register an email inbox, list mailboxes, fetch or send email.

Use cases: writing, productivity, agent-building

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What's inside

Skill name
atomicmail
Description
Read and write email through the Atomic Mail from an AI agent. Handles proof-of-work authentication and JMAP so the agent thinks in JMAP method calls. Use when the user asks to register an email inbox, list mailboxes, fetch or send email.
License
MIT
Instructions
200 lines in SKILL.md · view on GitHub

Before installing

  • Ships executable scripts

Files (167)

  • SKILL.md
  • _dnt.polyfills.d.ts · lib/esm/
  • _dnt.polyfills.d.ts.map · lib/esm/
  • _dnt.polyfills.js · lib/esm/
  • agent-auth-http.d.ts · lib/esm/lib/agent/auth/
  • agent-auth-http.d.ts.map · lib/esm/lib/agent/auth/
  • agent-auth-http.js · lib/esm/lib/agent/auth/
  • agent-jwt.d.ts · lib/esm/lib/agent/auth/
  • agent-jwt.d.ts.map · lib/esm/lib/agent/auth/
  • agent-jwt.js · lib/esm/lib/agent/auth/
  • agent-pow.d.ts · lib/esm/lib/agent/auth/
  • agent-pow.d.ts.map · lib/esm/lib/agent/auth/
  • agent-pow.js · lib/esm/lib/agent/auth/
  • agent-utm.d.ts · lib/esm/lib/agent/auth/
  • agent-utm.d.ts.map · lib/esm/lib/agent/auth/
  • agent-utm.js · lib/esm/lib/agent/auth/
  • agent-help-content.d.ts · lib/esm/lib/agent/jmap/
  • agent-help-content.d.ts.map · lib/esm/lib/agent/jmap/
  • agent-help-content.js · lib/esm/lib/agent/jmap/
  • agent-jmap-blob-limits.d.ts · lib/esm/lib/agent/jmap/
  • agent-jmap-blob-limits.d.ts.map · lib/esm/lib/agent/jmap/
  • agent-jmap-blob-limits.js · lib/esm/lib/agent/jmap/
  • agent-jmap-blob-upload.d.ts · lib/esm/lib/agent/jmap/
  • agent-jmap-blob-upload.d.ts.map · lib/esm/lib/agent/jmap/
  • agent-jmap-blob-upload.js · lib/esm/lib/agent/jmap/
  • agent-jmap-email-charset.d.ts · lib/esm/lib/agent/jmap/
  • agent-jmap-email-charset.d.ts.map · lib/esm/lib/agent/jmap/
  • agent-jmap-email-charset.js · lib/esm/lib/agent/jmap/
  • agent-jmap-run.d.ts · lib/esm/lib/agent/jmap/
  • agent-jmap-run.d.ts.map · lib/esm/lib/agent/jmap/
  • agent-jmap-run.js · lib/esm/lib/agent/jmap/
  • agent-jmap-verify.d.ts · lib/esm/lib/agent/jmap/
  • agent-jmap-verify.d.ts.map · lib/esm/lib/agent/jmap/
  • agent-jmap-verify.js · lib/esm/lib/agent/jmap/
  • agent-jmap.d.ts · lib/esm/lib/agent/jmap/
  • agent-jmap.d.ts.map · lib/esm/lib/agent/jmap/
  • agent-jmap.js · lib/esm/lib/agent/jmap/
  • agent-vars.d.ts · lib/esm/lib/agent/jmap/
  • agent-vars.d.ts.map · lib/esm/lib/agent/jmap/
  • agent-vars.js · lib/esm/lib/agent/jmap/
  • auth.d.ts · lib/esm/lib/agent/jmap/help-content/
  • auth.d.ts.map · lib/esm/lib/agent/jmap/help-content/
  • auth.js · lib/esm/lib/agent/jmap/help-content/
  • cron.d.ts · lib/esm/lib/agent/jmap/help-content/
  • cron.d.ts.map · lib/esm/lib/agent/jmap/help-content/
  • cron.js · lib/esm/lib/agent/jmap/help-content/
  • index.d.ts · lib/esm/lib/agent/jmap/help-content/
  • index.d.ts.map · lib/esm/lib/agent/jmap/help-content/
  • index.js · lib/esm/lib/agent/jmap/help-content/
  • installation.d.ts · lib/esm/lib/agent/jmap/help-content/
  • installation.d.ts.map · lib/esm/lib/agent/jmap/help-content/
  • installation.js · lib/esm/lib/agent/jmap/help-content/
  • jmap-cheatsheet.d.ts · lib/esm/lib/agent/jmap/help-content/
  • jmap-cheatsheet.d.ts.map · lib/esm/lib/agent/jmap/help-content/
  • jmap-cheatsheet.js · lib/esm/lib/agent/jmap/help-content/
  • multi-account.d.ts · lib/esm/lib/agent/jmap/help-content/
  • multi-account.d.ts.map · lib/esm/lib/agent/jmap/help-content/
  • multi-account.js · lib/esm/lib/agent/jmap/help-content/
  • overview.d.ts · lib/esm/lib/agent/jmap/help-content/
  • overview.d.ts.map · lib/esm/lib/agent/jmap/help-content/
  • …and 107 more

SKILL.md (first lines)

# Atomic Mail

Atomic Mail exposes a programmable inbox over JMAP with PoW signup and JWT
rotation. This skill ships a single CLI entrypoint with three commands:
**`register`**, **`jmap_request`**, and **`help`** — matching the MCP server.

## When to use this skill

- Register a new inbox or log in with an existing API key.
- Send JMAP batches (inline JSON or preset files).
- Read built-in documentation (JMAP cheatsheet, presets, troubleshooting) or the
  package README (`atomicmail help --topic readme`).

**Call `atomicmail help` early and often** — before guessing
placeholders, `using` URNs, or cron setup. Start with `help --topic overview`,
then `presets` before custom `jmap_request` calls and `cron` after `register`.
If installed behavior disagrees with docs elsewhere, trust help from the running
package.

## Commands

```bash
{baseDir}/scripts/atomicmail register --username "myagent"

{baseDir}/scripts/atomicmail jmap_request --ops-file list_inbox.json
```

Run **`atomicmail --help`** or **`atomicmail <command> --help`** for flags.

## Defaults

- `authUrl`: `https://auth.atomicmail.ai`
- `apiUrl`: `https://api.atomicmail.ai`
- credentials directory: `~/.atomicmail`

## Workflow

### 1. Register (new account)

```bash
{baseDir}/scripts/atomicmail register \
  --username "alice" \
  --watch scheduled
```

`--watch` is **required** — it is your operator's decision, not yours; ask them.
Run `register` with no `--watch` to see the accepted values (each is a real
choice about how the operator works, so neither is a safe default to guess). On
the scheduling value, register prints the per-host schedule setup command.

Writes `credentials.json`, `session.jwt`, `capability.jwt`. Prints JSON
including `inbox` and `accountId`.

**Required next step:** the `watch` value decides who reads the inbox (see
[Inbox checks](#inbox-checks-after-register)). On `scheduled`, schedule a daily
**agent** turn with `list_inbox.json` on your runtime's own scheduler — never at
the OS level, and never cron `atomicmail jmap_request` alone.

Usernames must be 5–21 characters (local-part of your `@atomicmail.ai`
address).

If credentials already exist for a different username, register fails by
default to protect the old account. To add another inbox without replacing the
current one, pass a separate `--credentials-dir` (MCP: `credentials_dir` on
`register` / `jmap_request`). Use `--forced` only when you intend to replace
credentials in the **same** directory (after backing it up).

### 2. Register (existing API key, in case losing the credentials file)

```bash
{baseDir}/scripts/atomicmail register \
  --api-key "..."
```

### 3. JMAP request

```bash
{baseDir}/scripts/atomicmail jmap_request \
  --ops '[["Mailbox/get", {"accountId": "$ACCOUNT_ID"}, "m0"]]'
```

`$ACCOUNT_ID`, `$INBOX`, `$INBOX_MAILBOX_ID`, `$SENT_MAILBOX_ID`, `$UPLOAD_URL`, and `$DOWNLOAD_URL`
resolve from the session/credentials. Other placeholders such as `$TO` or
`$SUBJECT` require `--vars` with a JSON object of strings (same substitution
applies to `--ops` and `--ops-file`).

Preset file:

```bash
{baseDir}/scripts/atomicmail jmap_request \
  --ops-file list_inbox.json
```

With custom placeholders:

```bash
{baseDir}/scripts/atomicmail jmap_request \
  --ops-file send_mail.json \
  --vars '{"TO":"alice@example.com","SUBJECT":"Hello","BODY":"Hi there"}'
```

Bundled presets (no local file creation required):

- `send_mail.json` (`$TO`, `$SUBJECT`, `$BODY`)
- `send_mail_attachment.json` (`$TO`, `$SUBJECT`, `$BODY`, `$ATTACHMENT_BASE64`,
  `$ATTACHMENT_TYPE`, `$ATTACHMENT_NAME`)
- `send_mail_blob_attachment.json` (`$TO`, `$SUBJECT`, `$BODY`; pair with
  repeatable **`--attachment PATH`** for RFC 8620 upload →
  `$ATTACHMENT_0_BLOB_ID`, …)
- `list_inbox.json` (latest 50; uses `$INBOX_MAILBOX_ID`) — **used for the scheduled inbox check**
- `list_sent.json` (latest 50 the agent sent; uses `$SENT_MAILBOX_ID`) — send presets
  file their copy in Sent with `$draft` cleared, so it never shows in the inbox
- `reply.json` (`$MAIL_ID`, `$BODY`)

## Inbox checks (after register)

Registration only creates credentials. Nothing reads the inbox until something
wakes an agent to do it — that is what the required `watch` value decides, and it
is your operator's call, not yours:

From Atomic-Mail/atomic-mail-agentic, MIT.

Signals

Stars
264
Forks
64
Open issues
1
Contributors
6
Last commit (this folder)
Sep 27, 2026 (1 month ago)
Last release
Sep 27, 2026 (1 month ago)

From GitHub (fetched Oct 24, 2026).

Details

License
MIT
First seen
Oct 24, 2026
Last checked
Oct 24, 2026

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Cite this page

atomicmail skill. Agent Mart. https://agentmart.dev/skills/atomic-mail-atomicmail-cf03c4 (last updated 2026-10-24)