You have the option to resend the envelope; the progress will resume from the same place it was before the deadline expired.
The sender can search for a specific envelope using the "Documents" section: once the envelope has been retrieved and its Details have been accessed, the "RESEND" button will appear.
Before sending the envelope again, the procedure will ask the sender whether they would like to keep the same settings configured the last time the envelope was sent, with regards to its expiration date, or change the duration.