I'm not aware of any 7 day lag that occurs when you submit a listing to Postlets. Once Postlets includes your listing information in the data feed they send to us it should appear on Trulia within approximately 72 hours. You may want to check with Postlets to see how long it takes them to do this once you've added a listing to their site. You can also send us the addresses and prices for your listings to us (using the link below) so we can investigate.
Customer Service Representative