Passendo

Passendo is a Copenhagen-based email advertising platform founded in 2016 by Andreas Jürgensen and Anders Rantzau Rasmussen.

It operates as the first dedicated email ad server and Supply Side Platform (SSP) specifically designed for publishers. Passendo enables publishers and advertisers to connect within premium newsletters, offering full control over ad placement and smarter monetization of email inventory. The company provides a cloud-based ad technology ecosystem that includes the Passendo Ad Server, which allows for native and dynamic ads, and the Passendo SSP, which helps publishers monetize their newsletter inventory programmatically. Additionally, Passendo offers a Demand Side Platform (DSP) for advertisers to buy native ad formats at scale. With a global client base of over 4,000 premium publishing house newsletters, Passendo supports a variety of advertising formats and serves over 250 million monthly email ad impressions across Europe, the US, and the Middle East.