I made this open-source set of email filters. I've used it for years. The only email notifications I get are legit ones I need to know about.

bix6 a day ago | parent [-]

How hard / possible is it to use the rules in another mail provider?

	▲	kilroy123 a day ago \| parent [-]
		Depends on which one. I think you can use the Fast mail ones in proton mail.