If you want more control over filtering, it might be worth paying for an email service rather than using one of the free ones.
You can even set it up to forward your email, (minus the spam), to your existing account. Or you can forward your existing account to the new paid for one.
For just a pound or two a month, you can get an email service that has real customer support and a certain level of service.
Probably save enough data downloading spam to pay for itself if you are using mobile data.
