Agency Spotlights

The Leading Klaviyo Agency for Global Ecommerce — Named Klaviyo Agency Partner of the Year EMEA 2025

Underground Ecom is one of the world's most recognised email marketing agencies, with clients spanning the US, UK, Europe, and beyond. Headquartered in Farringdon, Central London, they've built a team of 150+ retention marketers across 25 languages — a deliberately global talent pool assembled to serve ecommerce brands at every scale, from fast-growing DTC startups to established 9 and 10-figure brands. Their sole focus is retention marketing. No paid media. No SEO. No generalist services. Just Klaviyo, done at a level that few agencies anywhere in the world can match. CEO Jamie Watkins put it plainly: "Our mission has always been to push the boundaries of retention strategy and help ecommerce brands unlock their full potential through CRM." Underground Ecom was officially named Klaviyo's Agency Partner of the Year EMEA 2025 at K:BOS 2025 — Klaviyo's flagship global event in Boston — with the award presented by Klaviyo's own CEO and Co-Founder, Andrew Bialecki. Read more about the award here: https://www.undergroundecom.com/klaviyo-agency-of-the-year-emea/ It is the highest recognition Klaviyo awards to a partner agency across the entire EMEA region. Whether you're a US brand looking to scale internationally, or a UK and European brand wanting to dominate your home market, Underground Ecom brings the same world-class retention expertise — and the results to prove it.