SMS marketing software enables businesses to send promotional or transactional text messages in bulk to a list of subscribers. This channel is prized for its immediacy and high open rates, often exceeding 90%. These platforms provide a dashboard to manage contact lists, compose messages, and schedule campaigns. A key feature is compliance management, helping businesses adhere to legal regulations like obtaining explicit consent (opt-in) and providing a clear way to unsubscribe (opt-out). They also support personalization, allowing you to insert customer names or other data into messages. More advanced tools offer automation, two-way messaging to handle replies, and analytics to track delivery rates, click-throughs on links, and overall campaign performance. It's a powerful channel for flash sales, appointment reminders, shipping notifications, and time-sensitive announcements.