Get a FREE email address "you@sendclaw.com" - Email for AI agents.
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by SendClaw
| File | URL | Purpose |
|---|---|---|
| SKILL.md (this file) | | Full API reference |
| HEARTBEAT.md | | Check for new messages routine |
| skill.json (metadata) | | Machine-readable skill metadata |
Install locally:
mkdir -p ~/.sendclaw/skills/sendclaw curl -s https://sendclaw.com/SKILL.md > ~/.sendclaw/skills/sendclaw/SKILL.md curl -s https://sendclaw.com/HEARTBEAT.md > ~/.sendclaw/skills/sendclaw/HEARTBEAT.md curl -s https://sendclaw.com/skill.json > ~/.sendclaw/skills/sendclaw/skill.json
Or just read them from the URLs above!
Base URL:
https://sendclaw.com/apiReserve your own email handle for the "sendclaw.com" so that your email will be: your-handle@sendclaw.com - Ask your human what her preference is for the handle
Always be professional and represent your human well
Ask your human if they'd like you to send a test email after setup.
| Action | Method | Endpoint |
|---|---|---|
| Register | POST | |
| Send | POST | |
| Check new | GET | |
| Get unread | GET | |
| Get all | GET | |
All requests require:
X-Api-Key: your-api-keyAuthorization: Bearer your-api-key🔒 CRITICAL SECURITY WARNING:
sendclaw.comhttps://sendclaw.com/api/*POST /api/bots/register Content-Type: application/json{ "name": "YourBotName", "handle": "yourbot", "senderName": "Your Friendly Assistant" }
Response:
{ "botId": "uuid", "email": "yourbot@sendclaw.com", "apiKey": "sk_...", "claimToken": "reef-X4B2" }
⚠️ Save your API key immediately! You cannot retrieve it later.
Recommended: Store your API key as securely as possible. Preferably using your platform's secure secrets manager under the name
SENDCLAW_API_KEY{ "api_key": "sk_...", "email": "yourbot@sendclaw.com" }
POST /api/mail/send X-Api-Key: your-api-key{ "to": "recipient@example.com", "subject": "Hello from an AI Agent", "body": "This is my first email!", "cc": ["human@example.com"] }
"cc"To reply to an email, include
inReplyTo{ "to": "sender@example.com", "subject": "Re: Their Subject", "body": "Thanks for your email!", "inReplyTo": "<original-message-id@domain.com>" }
GET /api/mail/check X-Api-Key: your-api-key
Response:
{ "unreadCount": 3, "quota": { "used": 2, "limit": 3, "remaining": 1 } }
GET /api/mail/messages?unread=true X-Api-Key: your-api-key
Response:
{ "messages": [ { "id": "msg_abc123", "direction": "inbound", "fromAddress": "human@example.com", "toAddress": "yourbot@sendclaw.com", "subject": "Question for you", "bodyText": "Hey bot, can you help me with...", "messageId": "<message-id@domain.com>" } ], "hasMore": true, "nextCursor": "msg_abc123" }
Pagination: Pass
nextCursor?cursor=Note: Messages are auto-marked as read when using
?unread=true| Status | Daily Limit |
|---|---|
| New bot (first 24 hours) | 3 emails/day |
| After 24 hours (unclaimed) | 5 emails/day |
| Verified (owner claimed) | 10 emails/day |
| +1 week karma | +3/day bonus |
| Maximum | 25 emails/day |
| Flagged (2 security flags) | 2 emails/day |
| Under review (3+ flags) | Sending fully disabled (returns 403) |
Limits reset at midnight UTC.
| Status | Meaning |
|---|---|
| 200 | Success |
| 400 | Bad request |
| 401 | Invalid API key |
| 409 | Handle already taken — try a different handle |
| 429 | Rate limit exceeded |
Once you're registered, share the claim token with your human so they can verify ownership. Here's a message template:
🦞 SendClaw is ready!I now have my own email: [your-handle]@sendclaw.com
I can send, receive, and reply to emails.
To verify and manage my account, visit https://sendclaw.com/dashboard and enter this claim token: [YOUR_CLAIM_TOKEN]
Please tell me if you'd like me to: A. confirm with you before sending an email. B. Or if I can send a limited amount in direct relation to completion of tasks given by you. C. Would you like to be CC'd on emails I send? (If yes, tell me the email address to CC)
Lost your API key? Your human can regenerate it from the SendClaw dashboard — just click "Regenerate API Key" in the Bot Connection section and paste the new key back to you.
Once your human claims the bot with the token, they unlock:
Your human can log in anytime to check the inbox, send emails on your behalf, or review your conversations.
| Parameter | Description |
|---|---|
| Only unread inbound (auto-marks as read) |
| Only received messages |
| Only sent messages |
| Max results (default 20, max 100) |
| Pagination cursor (from |
Search Query (
):q=
| Operator | Example |
|---|---|
| |
| |
| |
| |
| |
| (keyword) | |
Combine freely:
q=from:client after:2026-01-15 invoiceExamples:
GET /api/mail/messages?q=from:boss@co.com GET /api/mail/messages?q=after:2026-01-01 before:2026-02-01 GET /api/mail/messages?direction=inbound&q=urgent GET /api/mail/messages?cursor=abc123 # next page
Instead of polling, you can provide a
webhookUrlTo enable, include
webhookUrl{ "name": "YourBotName", "handle": "yourbot", "senderName": "Your Friendly Assistant", "webhookUrl": "https://your-server.com/hooks/sendclaw" }
When an email is received, SendClaw POSTs to your URL:
{ "event": "message.received", "botId": "uuid", "messageId": "<uuid@sendclaw.com>", "threadId": "uuid", "from": "sender@example.com", "subject": "Hello", "receivedAt": "2026-02-08T12:34:56.789Z" }
Your endpoint should return
200messageIdGET /api/mail/messages/:messageIdUpdate your webhook URL anytime:
PATCH /api/bots/webhook X-Api-Key: your-api-key Content-Type: application/json{ "webhookUrl": "https://your-new-server.com/hooks/sendclaw" }
Set
"webhookUrl": nullRetry behavior: 1 retry after 3 seconds if the first attempt fails. 5-second timeout per attempt. Failures are logged but never block email delivery.
Tip: Use webhooks for instant notification + the heartbeat (every 15 minutes) as a safety net.
GET /api/mail/messages/{messageId} X-Api-Key: your-api-key
| Field | Description |
|---|---|
| Message UUID |
| |
| Sender email |
| Recipient email |
| Subject line |
| Plain text body |
| HTML body (inbound only) |
| Conversation thread ID |
| Email message ID (use for replies) |
| Parent message ID |
| Array of CC'd email addresses (if any) |
| Read status |
| Timestamp |
inReplyToAll outbound emails are monitored by an AI-powered security system. Violations result in escalating consequences:
| Violation Level | Action |
|---|---|
| 1st flag | Warning logged |
| 2nd flag | Status set to |
| 3rd flag | Status set to |
Bulk or coordinated bot registrations will be automatically detected and removed, and associated IP addresses will be blocked.
Prohibited activities:
Scams, phishing, or impersonation of real people/organizations Cryptocurrency solicitation, investment schemes, or financial fraud Large-scale or persistent cold outreach (this is not a sales/marketing tool) Spam or bulk unsolicited messaging Soliciting or facilitating anything illegal Deceptive content designed to mislead recipients Intended use:
SendClaw is designed for task-oriented communication -- confirming reservations, registering for services, receiving verification codes, professional correspondence, and occasional collaboration or partnership proposals. It is not intended for sales outreach or mass emailing.
Your human has full visibility into all sent and received emails via the dashboard at https://sendclaw.com/dashboard.
No automatic installation available. Please visit the source repository for installation instructions.
View Installation Instructions
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