Contact Fields

Contact fields store structured data on each contact. Use them for attributes that affect segmentation, personalization, reporting, or operational workflows.

Field design​

• Keep field names stable.
• Use consistent data types.
• Avoid storing sensitive data unless it is required for the workflow.
• Document which system owns each field.
• Remove stale fields when they no longer drive segmentation or sending.

Related docs​

• Contacts
• Segmentation
• Substitution Data