Achieving +13% Daily New Users for Shein Through Optimized UA Growth

SHEIN

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Ecommerce

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Singapore

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September 3, 2025

Achieving +13% Daily New Users for Shein Through Optimized UA Growth

The Results

#1

Affiliate Partner in Quality

+13%

Daily New Users

API

Seamless Integration

Overview

Shein, one of the world’s fastest-growing e-commerce platforms, partnered with Z2A Digital to accelerate user acquisition and ensure long-term growth across global markets. Through a seamless technical integration, advanced targeting strategies, and performance-first optimization, Z2A helped Shein acquire high-value new users at scale, strengthen customer retention, and outperform industry benchmarks in quality and stability. Z2A became their number one affiliate in quality.

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The Vision

Shein’s vision was clear: to expand its user base globally by converting new shoppers into long-term customers. The company sought not just volume but also quality, ensuring a consistent flow of first-time buyers who could become repeat customers and contribute to sustainable revenue growth. At the same time, Shein wanted to maintain cost efficiency while growing its reputation as a leading fashion and lifestyle e-commerce app.

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The Challenge

The brand needed to ensure that a strong portion of acquired traffic came from first-time users rather than returning shoppers, something many partners struggled to deliver. At the same time, Shein’s market saturation meant that attracting incremental users required precise targeting and performance-driven strategies. Integration complexity also posed a barrier, as many partners were unable to connect effectively with Shein’s systems to provide accurate, real-time data. Finally, the company needed to balance scale with quality, ensuring growth without compromising ROAS, stability, or retention, requiring a partner with both technical expertise and performance marketing excellence.

Our Approach

Seamless Technical Integration
Z2A overcame integration challenges by building a direct API connection to Shein’s platform, something that many other partners failed to achieve. This gave Shein accurate, real-time data and confidence in the scalability of campaigns.

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New User Growth Focus
Z2A prioritized new user generation, consistently delivering 12–13% new daily users, significantly above industry benchmarks of ~10% or less. This focus on incremental traffic ensured Shein was expanding its customer base rather than recycling existing users.

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High-Value Audience Targeting
By leveraging data-driven segmentation, Z2A focused on high-intent demographics most likely to become loyal customers. Campaigns were aligned with Shein’s product categories and seasonal trends to maximize relevance.

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Multi-Channel Media Buying
Campaigns spanned across programmatic networks, social platforms, and CTV to ensure both reach and efficiency. Creative assets were continuously tested and optimized for engagement and conversions.

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Continuous Optimization‍

Performance was tracked in real time, enabling Z2A to refine bidding strategies, improve creative impact, and allocate spend toward top-performing channels. This ensured long-term ROAS stability and retention.

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Results

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+13% New Daily Users
Outperformed benchmarks by consistently delivering 12–13% of daily traffic as first-time users.
#1 Affiliate in Quality
Shein recognized Z2A Digital as its top partner for user quality, citing the ability to generate stable, high-value traffic.
Seamless API Integration
Gained a competitive advantage over other partners by resolving technical integration hurdles, enabling long-term collaboration.
Sustainable Global Growth
Combined scale, cost efficiency, and high user value to drive growth that supports Shein’s international expansion strategy.

Conclusion

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Through a combination of technical expertise, precise targeting, and performance-first optimization, Z2A Digital helped Shein achieve its goal of scaling global growth with quality at the forefront. By delivering a steady flow of new, high-value users and ensuring seamless integration, Z2A became Shein’s trusted partner for user acquisition and was recognized as their number one affiliate in quality.

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