The conversation between human and AI assistant.
Can I use multiple Forever USPS stamps to make up a certain postage amount, on a postcard bound to an international country?
Is there any difference between using the Forever USPS stamps and other USPS stamps for international postcards?
No, there is no difference between using Forever USPS stamps and other USPS stamps for international postcards. As long as the total postage amount is correct, you can use a combination of any USPS stamps.