This call returns the raw RFC-822 message source for the message (including attachments) with no parsing or decoding to any portions of the message.
email_message_idproperty of the message. The
gm-) can also be used.
Since we do not keep full copies of emails on our servers, this call triggers a connection to the IMAP server to fetch the message. Attachments are part of the message source so they will impact how fast this call responds.