Get a thread message's attachment
GET
/v1/email/threads/{thread_id}/messages/{message_id}/attachments/{attachment_id}
curl -X GET "https://us1.platform.bird.com/v1/email/threads/{thread_id}/messages/{message_id}/attachments/{attachment_id}" \
-H "Authorization: Bearer $TOKEN"Returns the raw bytes of a single attachment on a conversation message. Works for both received messages (rem_) and sent messages (em_). Attachment bytes are downloadable for 30 days after the message occurred; after that this endpoint returns 410 Gone.