Private e-mail provider—what are my options?

Hey guys,
I am looking to switch from Google when it comes to my calendar and e-mail. I was using free Proton mail for some time, but right now I am looking for something with more feature. What would be my options with below requirements:
1. 5< GB of storage
2. Supports at least 2 own domains
3. Supports use of creating and managing unlimited custom e-mails what I mean, I like to have e-mail like website1@my_domain.com website2@my_domain.com etc. I …

e-mail mail options privacy