This depends on what you email site is. For outlook, there is a "block" option on all junk emails that blocks further emails from that sender. The same goes with g mail. I am no sure how to do so on i cloud and other "app" email services. I hope this was helpful.
n the top right hand corner of a message, click the drop-down menu button (upside down triangle), and select "block." (It appears with the name of the sender in quotes.) Any future messages from the blocked addresses will land in the spam folder.
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