Can you add a notification filter for unknown senders

I’m getting aggravated about how many spam email messages I get through instant message not only that but they come in groups and they do it four or five minutes apart. Can there be added encryption with my phone number or can there be added notification setting where i don’t receive any from unknown senders? That would be nice! And why do iPhone chargers suck so **** much because I can’t keep mine no longer than four weeks before I have to get another one and I take care of them the best way I can, treating them with all the tender love and care.