@scottkr24
WF>Options>ALERTS...Maximum email alerts to send per hour
Choose a number like 1 so if you have 10 events that happen in an hour, instead of getting 10 separate emails, you will get only 1 email with all 10 events and maximum of 1 email per hour.
You can't stop a BOT from TRYING.
You can only stop it from succeeding. (Limiting or Blocking it)
That's one of the issues we are whining about in this very thread.
The only way I know of removing the burden from your OWN server, is to have a 3rd party involved like Cloud Fare which acts as a middle man and apparently intercepts bot attacks and such. But I have never used the service. Or if your hosting service has a security measure of their own in place which could alleviate the taxing put onto your server's cpu.