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Documentation Index

Fetch the complete documentation index at: https://fillout.com/help/llms.txt

Use this file to discover all available pages before exploring further.

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How to validate business emails

First, add an Email field to your form and click its to open the right-hand panel settings. Screenshot 2025-11-05 at 3.56.13 PM.png Head to the Enrich section where you can:
  • Disallow free email accounts - to block free email accounts (e.g., @yahoo.com, @gmail.com, and @hotmail.com) and require business or org emails only
  • Validate email addresses - to only allow valid emails to be submitted. Fillout calls a third party service to check if the email is valid. This helps prevent typos, like if someone types jeff@amazon.co instead of jeff@amazon.com
  • Enrich with Apollo - route leads to different pages based on company details. More info here.
  • Send verification code - to send OTPs to emails or phone numbers. Check out the guide here.
Validation rules are enforced when respondent tries to proceed to the next page. Screenshot 2025-11-05 at 4.00.07 PM.png
Email validation is part of the conversion kit paid add-on. Learn more and get started here.

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Related article

OTP verification

Ensure valid responses with email or SMS verification.