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Wemass

Madrid, Spain
One gateway to Spain’s leading digital media
Who Wemass is Wemass is an advertising marketplace founded in Madrid in 2019 that groups the main Spanish digital media groups. The company’s core identity is built around creating a single, accessible point where premium Spanish digital inventory is brought together, enabling clearer connections between media owners and advertisers. Based in Spain’s capital, Wemass focuses on making the fragmented digital media landscape easier to navigate for all stakeholders. Core services and expertise Wemass acts as a marketplace that aggregates the inventory of leading Spanish digital media groups. By grouping publishers under one roof, the platform simplifies access to high-quality Spanish digital audiences and provides advertisers and agencies with a consolidated entry point to that inventory. The company’s expertise lies in managing relationships with multiple media groups and presenting that collective offering in a way that is practical and usable for buyers. Approach and methodology Wemass follows a pragmatic, market-centered approach: curate trusted media partners, present their digital inventory in an organized marketplace, and maintain open channels of communication between publishers and buyers. The emphasis is on reliability, local market knowledge and a streamlined experience so that negotiations, planning and execution happen with less friction. Situated in Madrid, the team leverages its proximity to Spain’s media ecosystem to keep the marketplace relevant and responsive. Value proposition and differentiators What sets Wemass apart is its exclusive focus on the Spanish digital market and the deliberate effort to group the country’s main media groups into one cooperative environment. Instead of navigating disparate contacts across publishers, advertisers gain a single point of access to premium Spanish inventory. This concentrated offering saves time, clarifies options and reinforces the visibility of Spain’s digital media in advertising planning. Closing statement Wemass positions itself as a practical partner for those who want direct, efficient access to Spain’s leading digital media. Founded in 2019 and based in Madrid, the company continues to refine its marketplace with the aim of strengthening connections between Spanish publishers and advertisers.
26 people in their team
Speaks English, Spanish
Sortlist member since 2025
Founded in 2019
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Services

4 services offered by Wemass

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  • Description
    We aggregate premium Spanish digital inventory into a single marketplace, simplifying campaign buying and negotiation so advertisers reach curated local audiences efficiently across publishers.
    Skills in Advertising (2)
    Web AdvertisingDigital Media Advertising

    Learn more about Advertising


  • Description
    We design data-informed digital media strategies tailored to Spain, aligning advertisers with curated publisher mixes to maximize local reach and reduce planning friction.
    Skills in Digital Strategy (1)
    Digital Media Marketing

    Learn more about Digital Strategy


  • Description
    We plan wide-reach marketing campaigns across Spain by coordinating our publisher partners’ inventory, ensuring coherent messaging, scale and simplified national media execution.
    Skills in Marketing (1)
    Mass Marketing

    Learn more about Marketing


  • Description
    We run programmatic and social advertising across our curated Spanish publishers, optimizing transparency, reach and buying efficiency for advertisers and agencies.
    Skills in Online Advertising (3)
    Digital AdvertisingProgrammatic AdvertisingSocial Media Advertising

    Learn more about Online Advertising

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Team

26 members in Wemass's team

StoryWe founded Wemass in Madrid in 2019 with a simple conviction: access to Spain’s best digital media should be straightforward and collective. From day one we set out to bring together the main Spanish digital media groups into a single advertising marketplace — not to replace relationships, but to make them easier to manage. We see ourselves as connectors: smoothing negotiation, reducing friction and helping media owners and advertisers find the right match faster. Every day we work closely with publishers and buyers to keep the marketplace practical, trustworthy and focused on real reach across Spain. Our pride comes from helping local digital media compete more effectively and giving advertisers a clear path to premium Spanish inventory.
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Contact

Contact details of Wemass

Details


  • Headquarter51 Calle del Doctor Fleming, 28046 Madrid, España