Case Study: Marks & Spencer achieves near‑100% inbox placement and 20% more opens with Validity's Sender Certification

Marks & Spencer sees incremental gains in inbox placement leading to higher engagement and more sales

Marks & Spencer, a long-standing UK retailer with a loyal Sparks membership base and some 18 million registered users, depends on highly personalized email to drive traffic and sales. As they expanded their email program and list size, M&S faced the challenge of maintaining strong deliverability and inbox placement, so they turned to Validity and applied for Validity’s Sender Certification to protect their reach.

Validity’s Sender Certification reduced filtering and throttling, allowed increased broadcast volumes, and improved delivery speed. The program produced measurable gains for Marks & Spencer: inbox placement near 100%, over 20% more opens, an 86% drop in bounce rate, an 8% lift in click-throughs, and higher engagement that translated into more sales.

Marks & Spencer

James Howe

Email Broadcast Manager