This plugin works similar to the WooCommerce MailChimp Newsletter Discount plugin. However, it uses the SendinBlue platform for collecting emails instead of MailChimp.
This plugin makes use of a drag and drop custom field builder which allows creating unlimited information fields or specific fields as per the requirement of the website. You can also add a validation message for each field you create. It also syncs the newly created custom fields to the MailChimp newsletter discount.