Join us at NRF'26, New York – January 11-13, Stand #3971, Expo Level 3. Learn more
Join us at NRF'26, New York – January 11-13, Stand #3971, Expo Level 3. Learn more

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Key KPIs delivered by Taggstar

  • 1.51%

    conversion rate uplift

  • 335

    incremental orders

  • £33,271

    incremental revenue

  • 1,634%

    ROI (Extrapolated across a full year)

The Challenge

Castore wanted to drive conversion across its own brand range and increase Average Order Value (AOV). 

Impressed by the success of Taggstar’s social proof messaging for other well-known brands, Castore wanted to see how it might work for its own customers and decided to sign up to test it via Taggstar’s Social Proof Pro Plan. The recently launched product offers a quick, easy and cost-effective version of Taggstar’s full-featured enterprise product and is perfect for specialty brands and retailers growing online.  

The Results

During peak trading, speed is of the essence if a brand is to maximise its conversion opportunities. It’s a competitive period that demands swift responses. After signing a contract with Taggstar, Castore was live with social proof messaging only three weeks later. 

The initial proof-of-concept test ran on its UK website for 15 days from 20th November to 4th December 2025 on the PDP and mini cart. The 15-day test delivered a 1.51% uplift in conversion rate and generated 335 additional orders and £33,271 in incremental revenue. Over a full year, implementing social proof messaging is projected to deliver an annual ROI of 1,634%.  

“When we implement technology at Castore, we want it to perform to the same high level of excellence that we expect from our products. Taggstar answered that brief, with a period of only three weeks between signing the contract and going live.” 

Kirsty Ashworth, Head of eCommerce

The Future

Castore and Taggstar now plan to work together to optimise the current social proof messaging experience by introducing different designs to see what works best for its customers. Icons will also be introduced. 

Social proof messaging will also be expanded to the PLP to support customer decision-making throughout the buying funnel.

Testimonials

Kirsty Ashworth, Head of eCommerce at Castore, says: “When we implement technology at Castore, we want it to perform to the same high level of excellence that we expect from our products. Taggstar answered that brief, with a period of only three weeks between signing the contract and going live.” 

“While such a fast, easy implementation was impressive, the results have also proved we made the right decision. The projected ROI of 1,634% over the year is proof of just how cost-effective Taggstar’s Social Proof Pro Plan is.” 

Marjorie Leonidas, CEO at Taggstar, says: “We are rightly proud of the results we can generate for retailers and brands, as well as our speed of implementation, which is pain-free as well as fast. We love to see brands like Castore move fast to take advantage of all that social proof messaging can deliver and score great results.” 

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