customer story
Taking the stress out of audit season preparations.
Scaling Eves & Gray London’s Revenue with High-ROI WhatsApp Campaigns
Tim Waring
CEO
Eves & Gray London partnered with Zefir to scale revenue through high-performing WhatsApp campaigns integrated directly with their WooCommerce store. By combining structured promotional campaigns, advanced customer segmentation, and clear revenue attribution using UTMs and Zefir’s tracking system, the brand transformed WhatsApp into a predictable, high-ROI sales channel. The result was consistent 18–20X ROAS on WhatsApp campaigns, significantly outperforming traditional digital marketing benchmarks and providing full visibility into campaign performance and revenue contribution.
Eves & Gray London is a UK-based footwear brand known for premium women’s shoes designed for comfort, style, and everyday wear. With a growing customer base and strong brand demand, the team wanted a more direct and profitable way to reach customers beyond email and paid ads.
While traditional channels delivered results, engagement was becoming less predictable and campaign performance was harder to track at a granular level. Eves & Gray London needed a channel that offered:
Higher engagement
Clear revenue attribution
Faster campaign execution
Stronger ROI
That’s when they implemented Zefir’s WhatsApp marketing platform.
WooCommerce Integration & Attribution Setup
Zefir was integrated directly with Eves & Gray London’s WooCommerce store, enabling seamless access to:
Order data
Customer behaviour
Purchase history
Cart activity
Every WhatsApp campaign was tracked using:
UTM parameters
Zefir’s proprietary attribution tags
This ensured each sale could be accurately linked back to the exact campaign, message, and audience segment.
For the first time, the team had clear visibility into WhatsApp-driven revenue.
Campaign Strategy
Eves & Gray London used WhatsApp for:
New collection launches
Limited-time promotions
Stock announcements
Seasonal campaigns
VIP customer offers
Each campaign was:
Sent to segmented UK customer audiences
Fully compliant with UK messaging regulations
Timed for maximum engagement
Tracked with revenue attribution
Messages were short, direct, and conversion-focused — designed to drive immediate action.

Founder-Led Performance Results
According to founder Tim Waring, WhatsApp quickly became one of the brand’s most profitable channels:
“Most brands brag about 3–4X ROAS. With Zefir, we consistently achieve 18–20X ROAS on our WhatsApp campaigns. That level of return completely changes how you think about messaging as a revenue channel.”
These results were driven by:
High WhatsApp open rates
Instant customer engagement
Direct checkout links
Accurate revenue tracking
Strategic campaign timing
Measurable Business Impact
With Zefir, Eves & Gray London achieved:
18–20X ROAS on WhatsApp campaigns
Strong revenue attribution through UTMs + Zefir tags
Higher engagement compared to email
Faster campaign execution
Clear performance reporting
Scalable UK customer communication
WhatsApp became a core revenue channel, not just a support or notification tool.
Why Zefir Worked
Zefir provided Eves & Gray London with:
WhatsApp Business API access
WooCommerce integration
Campaign automation tools
Audience segmentation
Revenue attribution tracking
Centralised campaign management
Everything was managed from one platform, allowing the team to focus on strategy instead of manual execution.
A High-ROI Growth Channel for UK eCommerce
With Zefir, Eves & Gray London turned WhatsApp into a high-return marketing channel that consistently outperformed traditional benchmarks.
Instead of relying solely on email and paid ads, the brand now runs:
Revenue-driven WhatsApp campaigns
Fully tracked promotions
UK-focused customer engagement
Data-backed optimisation
The result is a scalable, predictable, and highly profitable messaging strategy.









