Litmus

Name: Litmus
Brand: Litmus Software, Inc
SKU: 683867c426d6bc4d1b64f21a
Rating: 4.7 (48 reviews)

Overview of Litmus Software Company

Litmus is a leading platform for email creation, testing, personalization, and analytics. It helps marketers ensure their emails are visually perfect, accessible, and optimized for engagement before sending. The platform is used by over 700,000 users, including 80% of the Fortune 100.

Founding and Growth

Founded: 2005 by three colleagues who initially built a tool for cross-browser testing.
Initial Investment: Started with just $800.
Evolution: Expanded from website testing to email testing, analytics, and full campaign optimization.
Global Reach: Offices in Cambridge, MA (HQ), San Mateo, CA, and London, UK.

Funding and Valuation

Litmus has been backed by a leading growth equity firm, though specific funding rounds and valuation figures have not been publicly disclosed.
In April 2025, Litmus was acquired by Validity, Inc., a major provider of marketing success and customer data intelligence solutions

Product Offerings and Features

Litmus offers a robust suite of tools across the email marketing lifecycle:

Core Features

Email Builder: Drag-and-drop or code-based creation
Litmus Proof: Collaboration and approval workflows
Litmus Test: Previews across 100+ email clients and devices
Litmus Personalize: Dynamic content, countdown timers, personalized images
Litmus Analytics: Engagement tracking, geolocation, device usage
Litmus Assistant (AI): Subject line generation, tone adjustment, translation

Integrations

Works with major ESPs like Salesforce, Mailchimp, Marketo, Klaviyo, and more.

Acquisitions and Product Expansion

Acquired by Validity in April 2025 to combine Litmus’s pre-send optimization with Validity’s post-send analytics and deliverability tools.
This merger aims to create a comprehensive, end-to-end email marketing platform.

Litmus AI and New Features

Email Guardian: Always-on monitoring for broken links and rendering issues
Animated Image Carousels and Scratch-Offs: Interactive content
Rule-Based Personalization: Show content based on user behavior or CRM data
Litmus Personalize Pro: Advanced dynamic content and product feed integration.

Company Culture and Values

Litmus emphasizes a people-first, remote-friendly culture with values such as:

Take it to Heart: Passion for performance and customers
Considerate Communication: Intentional and transparent dialogue
Act Humbly and Confidently: Supportive and ego-free collaboration
Bias to Action: Creativity and results-driven mindset
Be Beyond Litmus: Community involvement and work-life balance

User Base and Community

700,000+ users globally
Trusted by 80% of the Fortune 100
Active #emailgeeks community
Recognized as a G2 Momentum Leader and TrustRadius Tech Cares award winner

Litmus

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