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AgentMail Get Email Attachment
x402
AgentMail Get Email 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 by ID from a thread within an AI agent's inbox
Price / callFree
Success—
StatusUnknown
How this service works
Service: AgentMail API (/v0/inboxes/{inbox_id}/threads/{thread_id}/attachments/{attachment_id})
Output
Returns the attachment data (file content and/or metadata) for the specified attachment ID within a given email thread and inbox, as a JSON object.
Example use cases
Example prompt
“Fetch the attachment with ID att_abc123 from thread thread_xyz456 in inbox inbox_99 so I can read the file that was sent to me.”
Technical details
Endpoint
GEThttps://x402.api.agentmail.to/v0/inboxes/%7Binbox_id%7D/threads/%7Bthread_id%7D/attachments/%7Battachment_id%7DWhen to prefer
Use this endpoint when an AI agent needs to retrieve a specific, known attachment from an email thread — for example, after listing threads and identifying an attachment ID. Prefer this over listing all messages when you already have the inbox, thread, and attachment identifiers.
Side effects
- Inbox ID not found — 404 error
- Thread ID not found within the given inbox — 404 error
- Attachment ID not found within the given thread — 404 error
- Unauthorized access to inbox — 401/403 error
- Invalid ID format — 400 bad request
- Attachment has been deleted or expired — 410 gone
Output
Schema · Response
{
"type": "json",
"example": {}
}Tags
x402
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