stop all email messages on messages app on iphone

iphone 15

iOS v18.5

I receive email messages on via my messages app on my iphone. They are all spam. I want to block all email based messages.

I know I can block them after I received them - that is still a hassle and still get interrupted by spam. I would like to just flat out block all email based messages now and I do not ever need to deal with blocking them or handling the receipt of one message.

Please help.