Unable to extract Sent emails

When attempting to extract emails from the Sent folder, the MIME parts include the original message but not the actual sent response. Is that by design?

Start by reproducing extraction from a Sent folder and inspect the MIME parts returned for a sent message. Compare the original message with the sent response and determine whether the omission is intentional or an extraction defect. Done means the behavior is documented or corrected, with regression coverage for the observed message structure.

Written by the indexing model from the issue text.