AgentMail Get Thread

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AgentMail Get Thread is a free API for AI agents from AgentMail at mpp.api.agentmail.to, Free, status unknown (last checked 2026-10-11).

Retrieves a full email thread by inbox ID and thread ID, including all messages, metadata, labels, senders, and recipients

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How this service works

Get Thread

Output

Returns a Thread object containing: inbox_id, thread_id, subject, labels array, senders list, recipients list, message count, total size in bytes, preview text of the last message, timestamps (created_at, updated_at), and a full messages array where each message includes from/to/cc/bcc addresses, text and HTML body, attachments, labels, and message-level timestamps.

Example use cases

Example prompt

“Pull up the full email thread with ID 'thd_abc123' from inbox 'inbox_xyz456' on AgentMail — I want to see all the messages, who sent them, and any labels on the thread.”

Technical details

Endpoint

GEThttps://mpp.api.agentmail.to/v0/inboxes/:inbox_id/threads/:thread_id?utm_source=zero.xyz

When to prefer

Use this endpoint when you need the complete details of a specific email thread — including all messages, metadata, and labels — and you already know both the inbox_id and thread_id. Prefer this over listing endpoints when you have a specific thread to inspect rather than browsing all threads.

Side effects

Invalid inbox_id or thread_id returns 404 not found
Missing or invalid Authorization Bearer token returns 401 unauthorized
Malformed path parameters return 400 bad request
Thread belongs to a different inbox than specified returns 404
Rate limiting may return 429 too many requests

Input

Schema · Request body

Field	Type	Description
inbox_idrequired	string	The ID of the inbox.
thread_idrequired	string	ID of thread.

Output

Schema · Response

Field	Type	Description
sizerequired	integer	Size of thread in bytes.
labelsrequired	array	Labels of thread.
preview	string	Text preview of last message in thread.
sendersrequired	array	Senders in thread. In format `username@domain.com` or `Display Name <username@domain.com>`.
subject	string	Subject of thread.
inbox_idrequired	string	The ID of the inbox.
messagesrequired	array	Messages in thread. Ordered by `timestamp` ascending.
thread_idrequired	string	ID of thread.
timestamprequired	string	Timestamp of last sent or received message.
created_atrequired	string	Time at which thread was created.
recipientsrequired	array	Recipients in thread. In format `username@domain.com` or `Display Name <username@domain.com>`.
updated_atrequired	string	Time at which thread was last updated.
attachments	array	Attachments in thread.
message_countrequired	integer	Number of messages in thread.
sent_timestamp	string	Timestamp of last sent message.
last_message_idrequired	string	ID of last message in thread.
received_timestamp	string	Timestamp of last received message.

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