The CRM Extra Field app allows businesses to extend their CRM functionality by adding custom fields to the CRM lead and opportunity forms in Odoo. Track extra details like fax, Skype ID, date of birth, home phone, extra emails, and more. This app improves lead management, enhances customer relationships, and makes CRM data more detailed and organized. With added search and filter capabilities, your team can easily segment leads based on additional customer information, making it perfect for businesses that need to capture more granular customer data.