If the Domme can wait 3-5 days to snail mail a money order thats great, but most subs are so last minute with sessions that the snail mail won't work. Most requests I get are within 1 - 7 days. They also will say "yes mistress I sent it" without sending as a way to continue to email/waste time. I need a deposit to hold the time on My schedule, otherwise I could be booking someone else for that time slot--So it usually goes, you want to book a session? Send the deposit by the end of the day or move over for someone else who can!