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We Let the Data Speak for Itself.

Talk is cheap in the agency world. Promises of "increased traffic" and "better brand awareness" do not pay your operating expenses.

When evaluating the best digital marketing agencies in the US, you should demand to see the math. Explore our archive of digital marketing company case studies to see exactly how we engineer predictable pipeline, reduce customer acquisition costs, and drive hard revenue for our partners.

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Why Standard Marketing Case Studies are Flawed

Most marketing agency results pages are filled with misleading data. An agency will boast about generating a "300% increase in website traffic," but conveniently fail to mention that the traffic was completely unqualified and resulted in zero closed deals.

At Leadnox, we do not report on vanity metrics. Because we deploy enterprise-grade campaign tracking (including server-side GTM and deep CRM integrations), each case study reports the business number the client judged us on: return on ad spend, cost per acquisition or qualified leads. We document the initial friction points the client faced, the architectural solution we engineered, and the measurable business outcomes we delivered.

Explore Our Growth Frameworks in Action

These are live engagements with the figures our clients actually reported, across retail, healthcare, e-commerce and real estate.

Retail BrandGoogle AdsAgency Takeover
10.5x
Better Return on Ad Spend

How a $4M Retail Brand Went From 0.34x to 3.57x Google Ads ROAS on 60% Less Spend

A retail brand turning over roughly $4 million a year had a previous agency running its Google Ads at a 0.34x return, which meant the account earned back about a third of what it spent in tracked conversion value.

Leadnox took over the account, cut wasted impressions in half, rebuilt bidding around conversion value instead of click volume, and moved spend onto the search terms that actually produced revenue. By the second full month, ad spend was down 60% and conversion value was up 322%.

3.57x
ROAS, up from 0.34x
60%
Lower Ad Spend
322%
More Conversion Value
Cost per conversion cut 58.5%

Value per conversion rose 338%, and the conversion count held within 4% of the previous agency's month on 40% of the budget.

HealthcareMeta AdsPerformance Marketing
60%
Cost-Per-Acquisition Reduction

How a Healthcare Provider Cut Its Patient Acquisition Cost by 60% in 8 Weeks

A multi-specialty healthcare provider was burning through its monthly Meta Ads budget with no funnel, a single stale creative that had been running for more than 3 months, zero pixel tracking, and a landing page that took 12 seconds to load on mobile.

Leadnox rebuilt the entire strategy: full-funnel audiences, 6 new ad variants, high-intent lead form qualification, and a landing page rebuilt to load in 1.8 seconds.

60%
CPA Reduction
4x
Qualified Lead Volume
8 wks
Time to Results

Within the first month of Leadnox taking over our campaigns, we saw a dramatic drop in junk leads and a significant increase in actual bookings.

Marketing Head, Multi-Specialty Healthcare Provider
E-CommerceGoogle + MetaNew Zealand
39.5x
Return on Ad Spend

How Resupply Achieved a 39.5x ROAS Across Google and Meta Ads

Resupply, a New Zealand agricultural e-commerce brand supplying farmers and rural businesses, needed every dollar of a lean budget to deliver measurable revenue.

Leadnox built a multi-platform strategy: Performance Max, Brand Search and Shopping campaigns on Google, paired with Meta campaigns for top-of-funnel awareness and direct purchase.

39.5x
Combined ROAS
NZ$825
Total Ad Spend
271x
Brand Search ROAS
NZ$19,504 from Brand Search alone

That revenue came from just NZ$71.97 in Brand Search spend.

Real EstateFacebook & InstagramLead Generation
276
Qualified Leads in 25 Days

How Metropettai Generated 276 Qualified Real Estate Leads in 25 Days

Metropettai needed a high-quality lead pipeline for a real estate project, quickly and cost-efficiently. Leadnox launched Phase 1 on Facebook and Instagram with four creative variants running at the same time from day one.

Meta Instant Forms kept friction low, while continuous performance monitoring moved budget to the best-converting creatives.

276
Qualified Leads
4
Creative Variants From Day One
1.86M
Impressions
725,000 unique users reached

The best creative's cost per lead ran 10.6% below the campaign average, within a fixed daily budget.

These are documented outcomes from specific engagements, not typical or guaranteed results. Results depend on market competition, budget, close rate and how quickly a business follows up on leads. We share them so you can judge the method, not as a promise of what your account will do.

The Common Thread: Infrastructure Before Scale

As you review these results, you will notice a common operational theme. We never scale ad spend on a broken foundation.

In these four engagements that meant moving spend onto the search terms and creatives that measured best, as with the retail brand and Metropettai, and rebuilding the healthcare provider's 12-second landing page to load in 1.8 seconds. Where follow-up is slow, we automate it so new leads are not left waiting. Only when the bucket is sealed do we pour the traffic in.

Two colleagues reviewing a results plan together at a whiteboard

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