Link paypal to privacy.com?

As far as I know, Privacy can be used anywhere that will accept a US debit card. See Can I use Privacy Cards on international purchases? If you are concerned about fraudulent charges I’d use the privacy card directly and lock it to a merchant with a fixed spending limit. Any place that attempts to use the card will be declined. You can go the extra step and close the card after your item has been delivered. The drawback, you wouldn’t be able to create a new card for the same merchant in the future (this protects merchants from free trial abuse). I’d recommend pausing the card when you are done with it instead of closing it. The difference being you can unpause the card at any time and use it again for the same merchant. As for the email, I’d use an email alias. See Privacy Guides Email Aliasing recommendations. You create an email alias with whatever provider you chose (Addy, SimpleLogin). You will link your aliases to your real email. When you place your order, use the email alias you created (beware, some merchants will block aliases created by SimpleLogin as fraud, try making a new alias with a different domain SimpleLogin offers). The merchant will not have your real email only the alias. The email alias service will forward any email it receives to your real email. You can turn off the alias when you are done.