I don't know if this subject has already been broached, but it's a duplicate-worthy nugget of info.
Those of you who sell on eBay already know how great it is to be able to print first-class postage for sold ebay items, but did you know you can print first-class TRACKABLE postage via PayPal, US or worldwide, without an eBay sale? YES, YOU CAN!
1. Go to: https://www.paypal.com/us/cgi-bin/webscr?cmd=_ship-now
2. Log in.
3. Fill out the info & voila!
SPECIAL NOTE: You are charged an additional $0.19 for the delivery confirmation/tracking and it is not optional.
I can't tell you how much of a time-save this is and the tracking fee is completely worth it.