In the Contact Fields tab of Contacts, you can define the field names for mapping fields from your uploaded contact lists. When you create an SMS campaign, the available contact fields are used to send personalized messages and track how effective your campaign is.
On the Contact Fields tab, you can perform the following:
switch the toggle to enable or disable standard details, except the mandatory Phone
click Add field to create additional details
click the remove icon to remove unnecessary fields
view existing contact files in the Preview section at the bottom
The Standard Details block displays the most commonly used contact details. Enable or disable these fields using the toggles.
In Additional Details, you can add any custom field and specify its name and type - text or number.
After all the needed fields are added, check below in the Preview Contact Fields section to see how the information will be displayed.