United Internet

Montabaur, Rhineland-Palatinate, Germany · Founded 1988

10001+ employees · UTDI

Sourced & current · updated Jul 20, 2026Website

United Internet is a German internet services conglomerate operating major consumer brands like 1&1, GMX, and WEB.DE, with significant reach into digital advertising through its high-traffic email and portal platforms.

Where they sit

Stack tier: Infrastructure & Data (B)

Customer Data PlatformNative AdvertisingMarketing Platform

Dominant German internet conglomerate with one of Europe's largest authenticated email user bases, enabling first-party data advertising at scale