On average, I probably get about 5 "junk" emails and texts a day. Sometimes I get 10 a day, sometimes I go a week without one. They're generally easy to spot and I don't usually reply to them. I seem to get far less time wasters than some of the other ladies I know, so my experience might be different.
I would say the 5 main categories for me are:
1. The "hey u avail??" guys who send "???" every 10 minutes until they realize I'll never reply (bonus points if they send it to me past 2 AM, and extra bonus points if they call me names after getting mad I won't reply)
2. The ones who send novels about how beautiful I am or what they want their session to be without any screening info or any info on when they actually want to meet (they just want to talk to us for free without any intention of actually booking)
3. The ones who refuse to give any screening info/try to give me fake info
4. The ones who send really inappropriate and vulgar emails/texts
5. Actual junk/spam emails and texts from "escort ad" sites, creepy photographers, "web designers", etc.
I generally just delete these and go on with my day. I save my mental energy for my amazing and respectful clients who actually want to see me. No need to get upset or take it personally when someone tries to waste my time, because they probably do it to everyone.