Litmus

Litmus is an all-in-one email marketing platform trusted by over 700,000 users. The tool allows for easy email building and personalization, comprehensive email testing and QA, and seamless integration with other marketing technology. With Litmus, you have the power to test and preview 100+ popular email clients—including Dark Mode—from a single spot, in real time. Run a Litmus Test on every email campaign to check your links, images, tracking, and other critical elements before you send – and get guidance on how to fix any issues. Litmus Email Guardian is the only solution that watches over your emails when you can't be there, providing 24/7 monitoring of emails after they're sent. Whether you're using a local editor or your email service provider's email editor to create emails, Litmus Extension lets you personalize, preview, troubleshoot, and optimize your email right where you build. Litmus provides advanced insights and analytics to increase email ROI by 43%.