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AgentMail Get Message Attachment
x402
AgentMail Get Message Attachment is a free API for AI agents from x402.api.agentmail.to, Free, status unknown (last checked 2026-09-10).
Retrieves a specific email attachment from a message in an AgentMail inbox by attachment ID
Price / callFree
Success—
StatusUnknown
How this service works
Service: AgentMail API (/v0/inboxes/{inbox_id}/messages/{message_id}/attachments/{attachment_id})
Output
Returns the binary or structured content of the requested email attachment, including the file data associated with the given attachment ID within the specified message and inbox.
Example use cases
Example prompt
“Fetch the attachment with ID att_789 from message msg_456 in my AgentMail inbox inb_123 so I can read the file that was emailed to my agent.”
Technical details
Endpoint
GEThttps://x402.api.agentmail.to/v0/inboxes/%7Binbox_id%7D/messages/%7Bmessage_id%7D/attachments/%7Battachment_id%7DWhen to prefer
Use this endpoint when an AI agent has already identified a specific attachment ID from a message listing and needs to retrieve the actual attachment content. Prefer this over listing endpoints when you already know the exact inbox, message, and attachment IDs.
Side effects
- Invalid inbox_id returns 404 not found
- Invalid message_id returns 404 not found
- Invalid attachment_id returns 404 not found
- Unauthorized access returns 401 or 403
- Attachment has been deleted or expired returns 404
- Rate limiting returns 429 too many requests
Output
Schema · Response
{
"type": "json",
"example": {}
}Tags
x402
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