Mapping form custom fields to Sendinblue custom fields
When adding custom fields to ConvertFlow form elements, you can choose to select from "Sendinblue fields". This allows you to map contact info entered into the ConvertFlow custom field, into the correct contact custom field in Sendinblue
Mapping survey fields to Sendinblue custom field
When you create a survey element in ConvertFlow, click on the "Map to custom field" dropdown to the right in the builder panel, and you can select from your Sendinblue custom fields
Mapping preset ConvertFlow fields to Sendinblue custom fields
On your website's Integrations page, when you have Sendinblue connected, you'll see a "Fields" button, that when clicked, allows you to map ConvertFlow's preset contact fields to Sendinblue custom fields.
This is useful for mapping contact info added to ConvertFlow's preset fields through ConvertFlow's forms, that isn't already mapped to fixed fields in Sendinblue. For example, "first name" and "email address" are already mapped to Sendinblue for you.
Just enter the data name of the Sendinblue custom field you would like ConvertFlow's preset fields to be mapped to, and you're set!