US Postage - mixing stamps

[BridieW]

Howdy, do y’all know if we can use the three-ounce and two-ounce stamps to send internationally? There’s Ursula K LeGuin & Walt Whitman sheets that I’d love to use, but I’m not sure it we can mix and match specific usage stamps.
For example, I could use a three ounce 98¢, additional ounce 20¢, 10¢ and 2¢ stamps to make $1.30.

[syaffolee]

Yes. You can use them too. I’ve used them without any problem.

[BridieW]

Thanks! That’s so exciting, so many more opportunities

[Vagabond_Trader]

@syaffolee do you know if these only allowed to be mailed within the USA since it says domestic?

[aerobear]

Yes! You can find a great index to mixing stamps here:

New U.S. stamp combinations, through the magic of computer programming

If you’re like me, and you’re an American postcrosser, you’ve been wondering how the U.S. postage increases will affect your stamp usage. Postcrossers abroad tend to receive lots of our “global Forever” stamps on their cards from the U.S., so I try to use multiple other stamps instead to add up to the same price. This was easy under the current postage rates—two Forever stamps and a ten-cent stamp, or three postcard stamps with a ten and a two—but the new postage rates complicate things a lot. W…

[syaffolee]

According to this, non-denominated stamps are approved to be used internationally since 1995.

[anon95027724]

I mix and match all the time. I have a large stock of stamps going up to $0.22. I currently use two $0.58 Commemoratives + a $0.06 and $0.08 stamps for the $1.30. Once I exhaust these, then I will move to $0.13 + $0.01.