Originally Posted by travel light

Hi!

You can use your airline, reward, or cashback CC to purchase "forever" postage stamps from the US Postal Service at a post office or online at USPS.com. The price of first class postage is set to increase from $.44 to $.46 on Jan. 2, a 4.5% hike, but the "forever" stamps remain valid for first class domestic postage.

If you or your small business do a significant amount of mailing, you can combine the soon-to-be-discounted postage rate with your CC reward for a 5.5%-6.5% boost.

Of course you have to be willing to use the stamps rather than meter your mail. If you buy online, USPS charges a flat $1.00 postage and handling regardless of the size of the order.