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Custom Field Validation in HubSpot Forms

A Comprehensive Guide to Overcoming Limitations and Implementing Solutions

Overview

This article provides guidance on the limitations and solutions associated with custom field validation in HubSpot forms, focusing on frequent scenarios like email address validation and the use of custom JavaScript.

Understanding Email Address Validation Limitations

The Issue

HubSpot forms do not allow for direct custom validation on fields, which includes email addresses. This can be problematic when specific input formats are required.

Implementing a Solution

To achieve custom validation, particularly for email addresses, you can use custom JavaScript. Here’s how:

  1. Embed the Form: Start by embedding your HubSpot form onto your external website.
  2. Add Custom JavaScript: Integrate JavaScript that validates the input field values, such as ensuring the email format is correct, before the form submission.
  3. Refer to Guides: For detailed instructions on embedding forms and adding scripts, consult the HubSpot guide titled "Advanced Form Options."

Handling Subaddressed Emails

Consideration for Acceptance

HubSpot does accept subaddressed emails (e.g., example+suffix@gmail.com). However, if you have set specific regular expression (regex) validation rules for the email field, this may inadvertently block such formats.

Best Practice

Always check and adjust your field's validation settings to ensure that subaddressed emails are accepted.

Personalizing Email Signatures

Important Note

When personalizing email signatures, verify that the correct token is used (e.g., use instead of ). Mismatches can prevent the expected information from displaying properly.

Leveraging Calculated Fields and Conditional Logic

  • You can create calculated fields in HubSpot using Boolean values. Ensure that you perform checks for the existence of values to prevent errors.
  • For more complex conditional logic, consider creating an additional property and using workflows to update it. This method can accommodate multiple conditional requirements effectively.

Conclusion

Implementing custom validation in HubSpot forms often requires external solutions, primarily through JavaScript. By understanding the limitations and utilizing available workarounds, you can enhance form functionality and maintain data integrity.

For additional support, please refer to the "Advanced Form Options" guide or reach out to HubSpot Support for assistance.