Huge amount of junk mail. Iphone13mini

Same here, but I use a 15P, and removed my gmail account from Mail to resolve the issue. Instead, I use a gmail tab group to access gmail on Safari, and there is no evidence of the avalanche of junk mail while signed into gmail. More, I've used iCloud for a primary email for over one year. It is working very well.

Salutations Guidedogs,

Welcome aboard the Apple Support Community, we'd be happy to help you work on this issue.

We want to recommend that you check out this really helpful support article that has advice on how you can manage junk email and mitigate some of that spam you're receiving: Report and reduce spam in iCloud Mail - Apple Support

If you are using a different email service provider, such as Gmail or Yahoo, then you can also feel free to reach out to those providers and see if they have some additional guidance on how you can protect yourself from those types of email messages.

We hope this information is helpful!

Have a great day.