Mental Availability: The Marketing Concept Most Digital Marketers Ignore

If you work in digital marketing, there's a good chance you've never heard of mental availability. That's a problem — because it's arguably the single most important concept in marketing science.

What Is Mental Availability?

Mental availability is the probability that a buyer will think of your brand in a buying situation. It's a concept developed by the Ehrenberg-Bass Institute, most notably through Byron Sharp's work in How Brands Grow.

It's not awareness. Awareness means someone knows your brand exists. Mental availability means your brand comes to mind when it matters — when they're in a buying situation, when they have a need your product fills, when they're making a decision.

The distinction is critical.

Why Digital Marketers Miss This

Digital marketing was built on direct response. The entire infrastructure — targeting, attribution, optimization, ROAS — is designed to capture existing demand. Find people who are already looking for what you sell, show them an ad, measure the conversion.

This works. But it only captures demand that already exists. It does nothing to create the mental associations that make someone think of your brand in the first place.

Most digital marketing budgets are allocated entirely to demand capture. Almost nothing goes to demand creation — to building the memory structures that drive mental availability.

How Brands Actually Grow

The Ehrenberg-Bass research (across hundreds of brands, dozens of categories, and multiple countries) shows that brands grow primarily by increasing their buyer base — not by increasing loyalty among existing customers.

This directly contradicts the deeply held belief in digital marketing that loyalty, retention, and lifetime value are the primary growth levers. The data says otherwise.

Brands grow by reaching more people, being easy to think of, and being easy to find. Mental availability (being thought of) and physical availability (being easy to buy) are the two fundamental drivers.

What This Means for Your Strategy

If you're allocating 90% of your budget to bottom-funnel, direct-response campaigns, you're optimizing for demand capture while neglecting demand creation.

The fix isn't to abandon performance marketing. It's to build a portfolio that includes both:

• Demand creation: Brand-building activity that creates and refreshes memory structures
• Demand capture: Performance marketing that converts existing demand efficiently

The ratio matters, and Binet & Field's research suggests roughly 60/40 brand-to-performance for most categories (with variation by sector).

This is one of the core themes in Never Always, Never Never — and it's the concept that most fundamentally challenges how digital marketers think about growth.