Litmus is an all-in-one email marketing platform that empowers teams to create emails their subscribers will love. Over 800,000 marketing professionals worldwide, including 80% of the Fortune 100, have relied on Litmus as a core component of their tech stack since 2005. Originally created to provide marketers with better email testing tools, Litmus’ capabilities improve every part of your email creation process including building, personalizing, monitoring, and analyzing your sends. Despite the many offerings, Litmus’ tools are intuitive and ready to use day-one. In 2025, Litmus joined the Validity product family. From contact data cleansing using DemandTools, to email validation using BriteVerify, Validity products now support you at every step of your campaign! The only other marketing tool you’ll need is an ESP. Questions? Their support team is always ready to help—with a 98% customer satisfaction rating to prove it. Everyone on the team will find value with Litmus: Email developers and designers can easily build and store templates in Litmus to speed up the email creation process—and empower team members without coding skills to create on-brand emails. Litmus brings your email workflow into a single platform, saving time and limiting room for error. Email marketers use Litmus to connect with their subscribers via highly personalized dynamic email content. Litmus’ thorough email testing provides peace of mind that every email is ready to go—and alerts you to unexpected changes 24/7 that may affect deliverability. The optional deliverability add-on gives you every detail about where your email landed and how to improve. Marketing leaders depend on Litmus’ ESP integrations—including Salesforce Marketing Cloud, HubSpot, Marketo, and more—to eliminate manual work and boost team collaboration. Litmus fits into your existing tech stack with little to no setup required. They love the optional analytics add-on that saves time and solves data differences by bringing results across multiple tools into one place. Eliminate the uncertainty that sending emails can create. Make every send count®