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How to Create Custom Properties in Klaviyo

Updated on:
May 12, 2026
By:
Madhav Bhandari
Use this interactive demo to learn how to add custom properties to Klaviyo customer profiles.

Quick summary

Custom properties in Klaviyo let you store unique profile data beyond default fields, enabling more precise audience segmentation and personalized marketing. You can add a custom property directly from any customer profile in the Klaviyo Audience section in just a few clicks.


Steps

  1. Navigate to the Audience section in Klaviyo, where all your customer data lives.
  2. Open Profiles to view individual customer data and engagement history.
  3. Click a sample profile to open the customer details and access property customization options.
  4. Click Add custom property to enhance the profile with additional data for better segmentation.
  5. Select where to add the new custom property information within the profile.
  6. Specify the value for the customer's property, such as location data.
  7. Click Add profile property to save the new data and update the customer profile.
  8. Confirm the success notification — your custom profile property has been created in Klaviyo.

📌 Why this matters

Custom properties in Klaviyo allow marketers to go beyond standard contact fields and store any unique data point — such as customer tier, location, or purchase behavior — directly on a profile. This enables highly targeted audience segmentation, ensuring that email and SMS campaigns reach the right people with the right message. For e-commerce and DTC brands, the ability to create and manage custom profile properties is essential to building personalized customer journeys that drive repeat purchases and lifetime value. Klaviyo's custom properties give marketing teams full control over their data model without requiring developer support.
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