Undelivered Retrieval
When this function is activated, the SVM will allow you to recall any messages
you have sent that have not yet been picked up by the recipient.
From the mailbox Main Menu press [6] for mailbox administration.
G
Press 4 for undelivered messages.
G
This useful feature will allow you to cancel any messages that have not yet
been picked up by the recipient.
Mailbox Administration - Page 13