Most European P2P platforms require investors to have a EUR 🇪🇺 bank account.
I have found that investors from all over the world (with a few exceptions) can invest in any case by opening a Revolut, Payoneer or Transferwise account securely.
I know US P2P lending yields are low, too low in most cases, so US investors do look to European P2Ps.
Here is the list of the P2P I like the most lately:
✔️ Mintos 11% (because it is the biggest and still pays up to 11%)
✔️ Bondora 13% (because it is old and reliable so far. They also accept ordinary credit cards)
✔️ Estateguru 12% (because it is one of the most transparent real estate crowdfunding I have found so far. Its loans are secured by real estate)
✔️ Flender 10% (because it is a bit different from the other in this list but also registered in Ireland)
✔️ Trine 7% (because they allow me to invest in solar projects and sometimes even provide a government guarantee that I like)
✔️ Bridgecrowd 11% (because it is located in the UK and its loans are secured by real estate)
Here is the full list if anybody is interested:
https://www.revenue.land/blog/best-p2p-lending-tools
I consider p2p a potentially risky practice, so if loan interest rates were to fall below 6% I think I would move towards other investments.
I used Transferwise and was able to get set up on Estate Guru