Avoiding malware by unsubscribing from junk mail

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Sign up for a paid email provider. I’d choose FastMail. You get what you pay for.

In FastMail, you can create multiple email addresses.

If you're going to pay for something why not use a hosting company?

I've been using 123eHost for many years https://www.123ehost.com/

The basic plan costs around the same as FastMail, but I also have web hosting for my own domain, and unlimited email addresses, and unlimited forwarders. All for US$50/year

There's perhaps too much configuration involved for the OP but worth looking into?

I can use a different forwarder for each online purchase, or newsletter that I sign up for and as soon as it receives spam I can delete the forwarder and the the spam simply bounces back to the sender as unknown recipient.

 

[FelineTech]

If you're going to pay for something why not use a hosting company?

Email is more than just a mailbox. Hosting companies provide bare bones capabilities. If someone isn't highly technical, something like FastMail can provide 2-Factor authentication, great SPAM filtering engines, and other features (calendars, contacts, etc). You are paying for expertise in email, not simply a mailbox.