Strategies for stopping spam email?

[Biki]

The first step of preventing spam mail is that you should not open it in anyway and mark every email as spam so that it will go into the spam folder. Filtering and making id as blacklisted won't help you. Once the spam mail going into the spam folder you can delete it at once.

There is no other way as you are using this email id in different websites openly. You can minimise it.