How many stamps do I need to mail Christmas cards?

A typical greeting card can be sent for the cost of one postage stamp.

Smaller greeting cards can be eligible for postcard pricing.The cost of a First-Class Mail postcard stamp will go up in 2021.

ShippingEasy and Stamps.com offer First-Class Mail postage in 1-ounce and 3.5-ounces.You can purchase a First-Class Mail letter stamp.

There are a couple of potential charges that might affect the price of your postage.

First-Class Mail letters that cannot be processed automatically, such as envelopes that are too large, are subject to the Non-Machinable surcharge.The letters must be sorted by hand.Square greeting cards don't fit in standard equipment.There are USPS non-machinable surcharges.

The non-machinable surcharge is not applicable to cards sent as a "large envelope/flat".There are First-Class Mail flats.

The standard postage rate, plus a non-machinable surcharge, will be charged if letters meet these conditions.The USPS determines flexibility.