Our Story

Our story begins like many others: A few entrepreneurs struggled to find the exact solution they needed. So they created it themselves, fine-tuned it, and shared it with the world. But in this case, what started as an $800 venture became far bigger and better than the founders could ever imagine.

We got our start in 2005 when three colleagues built a solution to address the painful process of cross-browser testing. Initial users loved it. And asked for more.

It wasn’t long before new needs led to new requests, and capabilities expanded from websites to emails to analytics that could be applied across marketing channels.

Today, Litmus empowers teams to get more from their entire marketing mix by putting email first. More than 700,000 users across industries, including 80% of the Fortune 100, rely on our solutions to test, analyze, and improve. It’s how we help companies break through the advertising noise to be heard—and get more from email than they ever thought possible.

Our Mission

We believe email is the most powerful way to build digital connections with people. Litmus empowers marketers to send great email, every time, to create a world where everyone has meaningful and relevant experiences with their chosen brands.

Our Values

These guiding principles shape the way we work and how we collaborate.

We’re passionate about each other, about our performance, and about our customers. We do the right thing, not always the easy thing—we find common ground through give-and-take.

We communicate with intent, purpose, and transparency. We are all remote from someone else, and we are aware of how our actions impact others.

We’re approachable, accessible, and supportive. We act without ego or pretension, and express opinions with respect for one another’s perspectives.

We do not fear failure, we use proper judgment, we are creative, and we pride ourselves on getting results. We understand the power of trust among our colleagues, our users, and our community.

We’re active in our communities inside and outside Litmus. We strive to cultivate generosity, make a positive impact on those around us, care for one another, and maintain a healthy work-life balance.

Our Locations


675 Massachusetts Ave, 11th floor
Cambridge, MA 02139


Silicon Valley

231 2nd Avenue
San Mateo, CA 94401


Floor 3, 9 Devonshire Square
London EC2M 4YF

Don’t just take our word for it.

G2 - Momentum Leader - Winter 2024

Momentum Leader in Email Marketing on G2

G2 - Best Usability - Enterprise - Winter 2024

Best Usability in Email Testing on G2

TrustRadius Badge

Top rated leader in Email Testing on TrustRadius

TrustRadius Best in Software Badge

Top rated leader in Software on TrustRadius


Backed by a leading growth equity firm, our powerful platform gets better every day.

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Our leaders remain committed to helping companies get more from their marketing.

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Join our tight-knit team and work alongside some of the smartest people in the industry.

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