This is just a little reminder that USPS postage rates increase on January 27, 2013. Here’s a handy little chart for additional information. And, as always, it’s a good idea to get your invitation weighed so that you’ll be sure to have the correct postage on your invitations when they go out. The Postal Service will also introduce a First-Class Mail Global Forever Stamp. The new stamp will allow customers to mail letters anywhere in the world for one set price of $1.10.