# Validation email custom field

**URL:** <https://community.hubspot.com/t/validation-email-custom-field/70919>\
**Category:** HubSpot Ideas\
**Tags:** object\
**Created:** [December 9, 2022, 2:55pm UTC](https://community.hubspot.com/t/validation-email-custom-field/70919 "2022-12-09T14:55:58Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![lourancostahs](https://d10pqhm3lwygmk.cloudfront.net/user_avatar/community.hubspot.com/lourancostahs/32/2790_2.png) [@lourancostahs](https://community.hubspot.com/u/lourancostahs)\
**Post date:** [December 9, 2022, 2:55pm UTC](https://community.hubspot.com/t/validation-email-custom-field/70919/1 "2022-12-09T14:55:58Z")

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By defaul, HubSpot offer only one Email contact field that we can validate the domain:

> **[Block form submissions from specific email domains](https://knowledge.hubspot.com/forms/block-form-submissions-from-specific-email-domains)**
>
> Learn how to prevent visitors with email addresses at certain domains from submitting your HubSpot form.

> **[Domains blocked from form submissions](https://knowledge.hubspot.com/forms/what-domains-are-blocked-when-using-the-forms-email-domains-to-block-feature)**
>
> This article is a general list of all free email domains that are blocked when you turn on the 'Email Domains to Block' feature in your HubSpot form.

We can have situations that have a form with other contact personas, like this:

 ![Screenshot 2022-12-09 at 11.41.04.png](https://d2qpr2jzcazej7.cloudfront.net/original/3X/0/7/07d1182852b9bd7919f39f75007fe6306fcee6ba.png)

The issue is, we can’t validate other email custom fields. In this case.

1) HubSpot has a new type to custom fields, like email tpe

 ![Screenshot 2022-12-09 at 11.46.02.png](https://d2qpr2jzcazej7.cloudfront.net/original/2X/e/e2841180fbecf1679dbe6a649196ebaf17a2553b.png)

**OR**

2) When we create a custom field, we can select single line text type and in the rules validation, we have a email checbox rule

 ![Screenshot 2022-12-09 at 11.50.25.png](https://d2qpr2jzcazej7.cloudfront.net/original/3X/5/1/5108f7f251db0a598d2d36299ebb2308d006a36a.png)

And in the forms, this will enable the functionality domain blocked

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**Author:** ![CFalstad](https://avatars.discourse-cdn.com/v4/letter/c/c89c15/32.png) [@CFalstad](https://community.hubspot.com/u/CFalstad)\
**Post date:** [January 13, 2023, 2:47pm UTC](https://community.hubspot.com/t/validation-email-custom-field/70919/2 "2023-01-13T14:47:55Z")

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OH my gosh - this is just what I was looking for! Thank you so VERY much!!