Frontainer

[Stéphane]

Yeah, that can be annoying. However, there are many ways to prevent this.

1. Since most bots are really very stupid and not able to handle JavaScript, so you can prevent the registration with a simple JS by submitting a string when sending the form with JS. You can then check the string when you receive the data. I promise that you will catch 99,9% bot registrations with this method.

Yes that should do the job.
I'll go too with a fake field (css hidden) that have to be empty (pseudo value=""), most bots will fill this field.

Another one and an even simpler method is to write an ItemManager function that will check if a user has been registered for more than one day but has not yet verified with an email address, and if so, this user gets deleted:

Yes that nice, thank you very much.