Upon requesting a forward, your task will go into the current queue and an estimated completion time will be submitted to you. Please look for the hourglass icon and hover your mouse beside the pending forward task in your online mailbox at https://my.travelingmailbox.com. The hourglass is to the left of the red cancel button on the particular envelope in question.
Most requests are done the same business day or within 24 hours. In some occasions during periods of heavy mail volume, the time may exceed 24 hours but these cases are pretty infrequent.