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x402.orthogonal.com messages send
https://x402.orthogonal.com/agentmail/v0/inboxes/x402test1786260932@agentmail.to/messages/send
answers 402
Send an email message from an inbox. At least one recipient (to, cc, or bcc) is required. Returns the message_id and thread_id. Replace {inbox_id} directly in the path with the full inbox email (e.g., /v0/inboxes/myagent@agentmail.to/messages/send).
We sent a real
POST request to this endpoint and it
answered 402 with payment requirements we could parse.
- Price
- $0.01
- Network
- base
- Pay to
- 0xaA4a75114b5BdA671844ae10256d2B048dF8fdc3
- Spec dialect
- v2 (declares x402Version 2)
- Transport
- PAYMENT-REQUIRED header
- HTTP method
- POST
- Response latency
- 198 ms
- Payment options
- 3 usable of 3
- Last checked
- 2026-08-15T14:40:21.039Z (1d ago)
- Category
- other
Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fx402.orthogonal.com%2Fagentmail%2Fv0%2Finboxes%2Fx402test1786260932%40agentmail.to%2Fmessages%2Fsend"