I haven’t tried using an Airtable form as a site’s contact form, but I wouldn’t recommend it. Form spam can be a massive headache, and there are dedicated web tools for handling it. Airtable’s forms don’t have that kind of functionality, so you’d likely be opening yourself up to lots of spam if you used one for that purpose.
If you are using Zapier + Airtable then you could add OOPSpam app in your flow.
An example flow:
New Record Airtable -> OOPSpam -> Insert Record Airtable (or Send Outbound Email).
Note: I work at OOPSpam 🙂