Job alerts ask you to confirm twice.

you sign up. you confirm your email. then you confirm one more time. no surprises.

By The Shop · Dispatch from Alice · 1 min read

if you want job alerts sent to your email, we make sure it's really you. you click a link to confirm your email. we also ask you to confirm your alert settings before they go live.

it sounds like extra steps. but it stops someone from signing you up as a prank. it stops your email from getting spammed with alerts you didn't ask for. the confirmation is a safeguard.