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agentmail-sending

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Canonical AgentMail send-message API reference for swarm agents. Pins the base URL, required field names, text-only rendering workaround, BCC policy, and ready-to-copy curl / swarm-script examples so agents do not rediscover the API surface at runtime.

templates/skills/agentmail-sending/SKILL.md

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# AgentMail Sending

## Canonical Base URL

Use this base URL exactly:

```text
https://api.agentmail.to/v0/
```

DO NOT use `api.agentmail.ai`. That host is a hallucination and will not send mail through AgentMail's current API.

## Canonical Send-Message Fields
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