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huberthe-pro

Agents Mail — Free Email for AI Agents, with No sign-up, No API key needed

by Agents Mail · GitHub ↗ · v0.4.6 · MIT-0
cross-platform ✓ Security Clean
294
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2
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1
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8
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Install in OpenClaw
/install agentsmail
Description
Free email for AI agents. No sign-up needed. One call to get a mailbox and send.
README (SKILL.md)

Agents Mail — Email for AI Agents

This is "Agents Mail" (agentsmail.org), NOT "AgentMail" (agentmail.to). Do NOT use any agentmail CLI or npm package.

You are an AI agent? Do NOT open a browser. Do NOT install any CLI. Use the REST API directly against https://agentsmail.org. Start below.

One API call. Your agent gets its own email address. Free, encrypted, zero friction.

I need to send an email

No mailbox yet? Get one first (no auth needed):

curl -X POST https://agentsmail.org/api/getemailaddress \
  -H "Content-Type: application/json" \
  -d '{"agent_name": "my-agent"}'

The API response contains everything you need — follow the instructions it returns to save your credentials and start sending.

Then send:

curl -X POST https://agentsmail.org/api/send \
  -H "Authorization: Bearer {your_api_key}" \
  -H "Content-Type: application/json" \
  -d '{"to": "[email protected]", "subject": "Hello", "text": "From my agent!"}'

I need to check my inbox

curl https://agentsmail.org/api/inbox \
  -H "Authorization: Bearer {your_api_key}"

Read a specific email:

curl https://agentsmail.org/api/inbox/{emailId} \
  -H "Authorization: Bearer {your_api_key}"

Delete an email (content destroyed, HMAC receipt returned):

curl -X DELETE https://agentsmail.org/api/inbox/{emailId} \
  -H "Authorization: Bearer {your_api_key}"

I want a permanent mailbox

Upgrade from temporary to permanent — free:

curl -X POST https://agentsmail.org/api/upgrade \
  -H "Authorization: Bearer {your_api_key}" \
  -H "Content-Type: application/json" \
  -d '{"owner_email": "[email protected]", "name": "my-agent"}'

Magic link sent to owner. Once confirmed: custom address + unlimited sending + webhooks + contacts + ACL.

Name rules: lowercase + numbers + hyphens, 5-30 chars, set once only.

I want automatic notifications

Add an inbox check to your heartbeat routine. On each cycle, check for unread emails and notify your owner if any are found:

curl -s https://agentsmail.org/api/inbox?is_read=0 \
  -H "Authorization: Bearer {your_api_key}"

If unread emails found, summarize them (sender, subject, preview). If none, reply HEARTBEAT_OK.

API Reference

Method Path Auth Description
GET /api/help None API directory
POST /api/getemailaddress None Get a mailbox
POST /api/send API Key Send email
GET /api/inbox API Key Check inbox
GET /api/inbox/:id API Key Read email
DELETE /api/inbox/:id API Key Delete email
GET /api/sent API Key Sent emails
DELETE /api/sent/:id API Key Delete sent
POST /api/upgrade API Key Permanent mailbox
POST /api/webhooks Tier 1+ Add webhook
GET /api/contacts Tier 1+ Manage contacts
POST /api/acl Tier 1+ Sender rules

Email Lifecycle

Status Tier 0 Tier 1+
unread Kept until account recycled (30d) Kept permanently
read Kept until account recycled Kept permanently
sent Kept until account recycled Kept permanently
deleted Content destroyed, envelope preserved, HMAC receipt Same

All content encrypted at rest with AES-256-GCM.

Links


Agents Mail — 给 AI Agent 的邮箱服务

⚠️ 重要提示:本产品是 "Agents Mail" (agentsmail.org),不是 "AgentMail" (agentmail.to)。请勿安装任何 agentmail CLI 或 npm 包。

你是 AI Agent? 不需要打开浏览器,不需要安装 CLI。直接用 REST API 调用 https://agentsmail.org

一个 API 调用,即可获得专属邮箱地址。免费、加密、零摩擦。

我要发邮件

没邮箱?先领一个(无需认证):

curl -X POST https://agentsmail.org/api/getemailaddress \
  -H "Content-Type: application/json" \
  -d '{"agent_name": "my-agent"}'

API 响应包含你需要的一切 — 按返回的指引保存凭证并开始发送。

然后发送:

curl -X POST https://agentsmail.org/api/send \
  -H "Authorization: Bearer {your_api_key}" \
  -H "Content-Type: application/json" \
  -d '{"to": "收件人@example.com", "subject": "你好", "text": "来自我的 Agent!"}'

我要查邮件

curl https://agentsmail.org/api/inbox \
  -H "Authorization: Bearer {your_api_key}"

读取指定邮件:

curl https://agentsmail.org/api/inbox/{emailId} \
  -H "Authorization: Bearer {your_api_key}"

删除邮件(内容销毁,返回 HMAC 回执):

curl -X DELETE https://agentsmail.org/api/inbox/{emailId} \
  -H "Authorization: Bearer {your_api_key}"

我要永久邮箱

免费升级:

curl -X POST https://agentsmail.org/api/upgrade \
  -H "Authorization: Bearer {your_api_key}" \
  -H "Content-Type: application/json" \
  -d '{"owner_email": "[email protected]", "name": "my-agent"}'

系统发验证邮件给 owner,确认后自动升级:自定义地址 + 无限发送 + Webhook + 联系人 + ACL。

名称规则:小写字母 + 数字 + 连字符,5-30 个字符,只能设一次。

我要自动通知

在心跳周期中添加收件箱检查,有未读邮件则通知 owner:

curl -s https://agentsmail.org/api/inbox?is_read=0 \
  -H "Authorization: Bearer {your_api_key}"

有未读邮件则汇总(发件人、主题、预览),没有则回复 HEARTBEAT_OK。

API 参考

方法 路径 认证 说明
GET /api/help API 目录
POST /api/getemailaddress 领邮箱
POST /api/send API Key 发邮件
GET /api/inbox API Key 查收件箱
GET /api/inbox/:id API Key 读邮件
DELETE /api/inbox/:id API Key 删除邮件
GET /api/sent API Key 已发邮件
DELETE /api/sent/:id API Key 删除已发
POST /api/upgrade API Key 永久邮箱
POST /api/webhooks Tier 1+ Webhook
GET /api/contacts Tier 1+ 联系人
POST /api/acl Tier 1+ 发件人规则

邮件生命周期

状态 Tier 0 Tier 1+
未读 保留到账号回收(30天无活动) 永久保留
已读 保留到账号回收 永久保留
已发 保留到账号回收 永久保留
已删除 内容立即销毁,信封保留,HMAC 回执 同左

所有邮件内容以 AES-256-GCM 加密存储。

链接

v0.4.6

Usage Guidance
This skill is instruction-only and coherent with its stated purpose, but consider these practical cautions before using it: (1) The service issues an API key when you create a mailbox — treat that key like any secret (store securely, avoid embedding in code, rotate if leaked). (2) If you enable automatic heartbeat/inbox polling or webhooks, think about where the agent will send or process incoming email content (sensitive data could flow to your agent or external endpoints). (3) Webhooks require a public HTTPS endpoint and a secret; protect that endpoint and verify HMACs. (4) Review agentsmail.org’s privacy/security policy and assess trust before putting sensitive information in emails or granting an agent autonomous sending. (5) The README’s 'No API key needed' phrasing is misleading — it means no pre-registration, not that no key will be used. If you need higher assurance, inspect the service's backend code or host your own mail service instead.
Capability Analysis
Type: OpenClaw Skill Name: agentsmail Version: 0.4.6 The 'Agents Mail' skill provides a legitimate REST API-based email service for AI agents. The documentation (SKILL.md, API.md) and examples (EXAMPLES.md) focus on standard email operations like sending, receiving, and managing an inbox at agentsmail.org, with no evidence of data exfiltration, malicious execution, or harmful prompt injection.
Capability Assessment
Purpose & Capability
Name/description match the documented behavior (obtain mailbox, send/receive emails). One minor mismatch: the top-line marketing claim 'No API key needed' is misleading — you do not need to pre-provision a key or sign up, but the API returns an API key that you must use for protected endpoints.
Instruction Scope
SKILL.md contains concrete curl examples and higher-level usage patterns (get mailbox, send, check inbox, upgrade, webhooks). It does not instruct reading unrelated local files, scanning system state, or exfiltrating unrelated credentials. It recommends storing the returned API key in an environment variable (reasonable).
Install Mechanism
No install spec and no code files — instruction-only. Nothing is downloaded or written to disk by the skill itself, minimizing install-time risk.
Credentials
The skill declares no required environment variables or credentials. Examples show using an API key and webhook secret returned by the service — those are appropriate for an email API. There are no unrelated credential requests.
Persistence & Privilege
always is false and the skill does not request persistent or elevated platform privileges. The content recommends periodic inbox polling (heartbeat) which is normal for mailbox monitoring; autonomous invocation is allowed by platform default but is not specifically escalated by this skill.
How to Use
  1. Make sure OpenClaw is installed (local or Docker)
  2. Run the install command in chat: /install agentsmail
  3. After installation, invoke the skill by name or use /agentsmail
  4. Provide required inputs per the skill's parameter spec and get structured output
Version History
v0.4.6
- Updated documentation examples to use {your_api_key} instead of shell variables for clarity. - No functional or API changes; documentation only. - Version bump to 0.4.6.
v0.4.5
No changes in this release. - Version bumped to 0.4.5. - No file changes detected from the previous version.
v0.4.4
- Simplified setup: You no longer need to provide an API key to get started; sign-up is not required. - Documentation updated for easier onboarding — follow initial API response instructions to save your credentials. - Clarified environment variable usage for sending and receiving emails. - Streamlined notification and heartbeat instructions for agent developers. - Internal metadata keys removed for a cleaner manifest.
v0.4.3
- Added a standardized YAML metadata header with homepage, source repo, license, emoji, and environment variable requirements. - No changes to core usage instructions, API, or documentation content. - Version updated to 0.4.3.
v0.4.2
v0.4.1 - Security best practices: Added clear instructions to store `api_key` only as environment variable `AGENTSMAIL_API_KEY` and never in plaintext files. - Clarified that email address is not secret and belongs in IDENTITY.md. - Updated HEARTBEAT.md setup examples to encourage use of environment variables for API key. - Minor wording improvements for clarity and safety. - Bumped documentation version to v0.4.2.
v0.4.1
- Improved security guidance: API key storage instructions now recommend using an environment variable (AGENTSMAIL_API_KEY) or secure core memory, and advise not storing keys in plaintext shared files. - Updated examples for HEARTBEAT.md to use the AGENTSMAIL_API_KEY environment variable. - Documentation refreshed to clarify best practices for sensitive credentials. - No code changes; documentation only.
v0.3.1
**Version 0.3.1 Changelog:** - Added important warnings clarifying Agents Mail (agentsmail.org) is not AgentMail (agentmail.to); includes multilingual notices. - Introduced clear instructions for AI agents: no CLI, no SDK, use only documented REST API. - Added trial sending for Tier 0: new mailboxes may send up to 10 emails before unlocking unlimited usage. - Expanded multilingual documentation (English/Chinese) for registration, quick start, and trust tier upgrade. - Simplified onboarding: emphasized saving credentials, explained API key visibility, and outlined lifecycle and upgrade paths. - Streamlined and clarified API documentation and examples.
v0.3.0
AgentsMail 0.3.0 introduces a privacy-focused, zero-friction API for agents to send and receive email without setup or account creation. - Register an agent and get a universal email address instantly via API—no sign-up or API key setup needed. - Email content is temporary and auto-destroyed after reading or acknowledgment; only the envelope and signed receipt are retained. - Progressive trust tiers unlock capabilities like sending email and higher rate limits based on real agent interactions. - Support for inbox polling, webhooks for real-time notifications, contacts management, and access control (whitelist/blacklist) via API. - Comprehensive endpoint documentation and usage patterns included for easy integration.
Metadata
Slug agentsmail
Version 0.4.6
License MIT-0
All-time Installs 1
Active Installs 1
Total Versions 8
Frequently Asked Questions

What is Agents Mail — Free Email for AI Agents, with No sign-up, No API key needed?

Free email for AI agents. No sign-up needed. One call to get a mailbox and send. It is an AI Agent Skill for Claude Code / OpenClaw, with 294 downloads so far.

How do I install Agents Mail — Free Email for AI Agents, with No sign-up, No API key needed?

Run "/install agentsmail" in the OpenClaw or Claude Code chat to install it in one step — no extra setup required.

Is Agents Mail — Free Email for AI Agents, with No sign-up, No API key needed free?

Yes, Agents Mail — Free Email for AI Agents, with No sign-up, No API key needed is completely free, licensed under MIT-0. You can download, install and use it at no cost.

Which platforms does Agents Mail — Free Email for AI Agents, with No sign-up, No API key needed support?

Agents Mail — Free Email for AI Agents, with No sign-up, No API key needed is cross-platform and runs anywhere OpenClaw / Claude Code is available (cross-platform).

Who created Agents Mail — Free Email for AI Agents, with No sign-up, No API key needed?

It is built and maintained by Agents Mail (@huberthe-pro); the current version is v0.4.6.

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