This document is a guide that outlines the WhatsApp Delivery Method for Regroup, emphasizing its role in enhancing communication strategies for organizations with international or mobile workforces. It details the advantages of using WhatsApp, including its global reach, high engagement levels, and the ability to circumvent traditional SMS limitations. The guide explains how WhatsApp can be integrated as a premium add-on within Regroup, allowing organizations to send messages from their verified identity and enabling two-way communication. It also highlights the ease of activation and configuration for administrators, as well as the integrated reporting features that provide visibility into message performance. The document presents various scenarios where WhatsApp delivery can add immediate value, such as global workforce notifications, international travel alerts, and emergency communications. Overall, it emphasizes the importance of incorporating WhatsApp into mass notification strategies to improve message coverage and engagement.