Where can I find the WOIZZES I have sent and received?

In the main menu under "Mailbox" you will find a list with all contacts you have exchanged WOIZZES with in chronological order. If you want to listen to a certain WOIZZ one more time, tap on the respective contact. This will open the conversation containing all the WOIZZES you have sent to or received from that contact. Tap on the WOIZZ to listen to it again.