When I contact my senators and representative about literally anything and give them my email for a reply, they end up spamming me constantly with their newsletters bragging about how they're keeping Obama, and now Biden, from being able to get anything done, or how they would like to make the lives of immigrants and young women harder.
Howdy, Spam folder. GMail learns a bit more about how much I don't want to hear about the above.
(My senators are Cornyn and Cruz, representative is Carter.)
Other example: innocuous-looking, apolitical site with a few nice knitting patterns, and the promise of more if you register an account. I used a custom email address just for them in a domain I own.
Two weeks later: Newsmax and other far-right stuff to said email address that had never been used for anything else. No, I'm not worried about men calling themselves women and assaulting my unsuspecting daughter in a bathroom.
More education of the Spam filter.