We use Recruitee, and ironically it doesn't have good automatic ways of filtering out the kind of spam generated by the author. On busy weeks, I spend about an hour per day screening and responding to applications. About half that is wasted on low-effort applications and automated spam generated by people like the author, and a significant part of that are repeat offenders. Nowadays I send one warning, and then I ask Recruitee support to ban the person, which due to implementation reasons on Recruitee's end prevents the person from applying at any company using Recruitee. It's harsh and I often feel bad about it, but after having to deal with this nonsense for multiple years now, I'm so sick of it, and I just ran out of patience.