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.

I do use it but at the moment have not come across any spam.

If you are getting spammed, we’ve built a form for Airtable that supports CAPTCHA for human verification.

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).

https://zapier.com/apps/airtable/integrations/email/1208750/spam-check-new-airtable-records-with-oopspam-and-send-outbound-emails 

Note: I work at OOPSpam 🙂

Your best bet to fight spam in your forms is to use Fillout’s advanced forms for Airtable.

Fillout is 100% free, and it gives you a few different spam-fighting options:

1. You can add a captcha to your form.
    
2. You can prevent a form from being submitted unless the user answers a question in a specific way, such as a math question.
    
3. You can restrict who can access your form by creating a login page for your form, which will give you these options:
   
   - You can restrict the logins by SSO.
   - You can restrict the logins by email domain.
   - You can restrict the logins by password.
   - You can restrict logins based on a pre-approved list of email addresses that you have stored in your Airtable base.
   - You can verify & confirm that the user is typing in a valid email address.
   - You can limit form entries to one entry per person.
   
   (Pro tip: After the user logs in using your login page, that will let Fillout know who the user is and what the user’s email address is. You can use this information to automatically prefill other fields on your form based on who logged into your form, and you can even use this information to do other advanced tricks with Fillout. For example, you could use Fillout’s advanced filtering features to filter your linked record fields to only show the user the linked records that they are allowed to see.)

Fillout also offers hundreds of other advanced features, including the ability to update Airtable records using a form, create custom PDF files from a form submission, accept payments on forms, display Airtable lookup fields on forms, create new linked records on a form, control access to a form via SSO or email domains or a list of email addresses stored in Airtable, perform math or other live calculations on your forms, collect signatures on a form, create multi-page forms with conditional paths, connect a single form to dozens of external apps simultaneously, add CAPTCHAs to your form, and much more.

I show how to use a few of the advanced features of Fillout on these 2 Airtable podcast episodes:

• Using Fillout to create an eSignature approval process with PDF file creation.
• Using Fillout to create an order entry form with line items.

Hope this helps!

If you’d like to hire the best Airtable consultant to help you with anything Airtable-related, please feel free to contact me through my website: Airtable consultant — ScottWorld