Email marketing software helps businesses send mass emails to large groups of customers and prospects, allowing them to easily manage their campaigns and track their performance. The primary benefit of using email marketing software is that it can help businesses increase customer engagement, expand their reach to new audiences, and generate more leads and sales. It also allows businesses to customize email campaigns and use segmentation to target specific audiences. The automation and analytics features of email marketing software make it easy to track the ROI of campaigns, analyze data, and adjust campaigns in real-time to maximize effectiveness.