deleting old outgoing smtp servers
i have a laptop (monterey), desktop (high sierra) and iphone.
i would like to delete old outgoing (?) SMTP servers since any time i get in there rhere are like 30 of them.
also. i have gmail, hosted website email and an icloud account (and a couple others). is there a good way to know which outgoing SMTP servers i need to keep for gmail and or icloud?
THANKS