What are some alternatives?
IBM Customer Experience - Digital customer experience management software
SendX - SendX (https://sendx.io) provides remarketing and retargeting tools for web businesses. You can use popups, landing pages, email, web push notification, automation workflows and FB / Google retargeting to drive more revenue.
PathFactory - The always-on content engagement platform
Campaign Monitor - Email marketing software built for designers and their clients to run successful email campaigns.
Elevio - Learn how elevio can help bring all your support channels into one, to provide the best support possible for your users
Marketing Optimizer - Optimize conversion rates, increase lead-to-close ratio, and resell leads easily. Includes complete WordPress integration.