I have moved a website to a new webhost. Since the freeform ist no able to send any emails for notification reasons or alert reasons. Is there a basic switch or something similar I am missing to enable sending emails?
In that case, it's likely that Sendmail isn't configured on your new host. You could contact them for help in setting that up, though I'd recommend considering a switch to sending via SMTP/API. There's a bunch of different services out there, many of which have free tiers if you're not sending many emails - SendGrid, Mandrill, Amazon SES are a few options available.