The conversation between human and AI assistant.
How many stamps do I need to send a letter in the usa?
Is there any other option if I don't want to use stamps?
Yes, you can also use an online postage service like Stamps.com or USPS Click-N-Ship to print postage from your computer and then affix it to your envelope or package. You'll need a printer and a credit or debit card to use these services.