Proton caps the number of vaults you can create at 50, but I can’t imagine a situation where you’d need more than that. Unfortunately, free users have access to just two vaults. With unlimited logins and cross-device sync, there had to be a catch somewhere on the free plan. Plans and Pricing Pass Free Pass Plus Pass Family Proton Unlimited Storage 1 GB 10 GB 50 GB 500 GB Users 1 1 6 1 No. Free users are capped at 10 aliases, while paying users can create as many as they want.