Company lists · Data refreshed September 2026

Top 25 Online marketplace advertising agencies based in Spain

Name: Online marketplace advertising agencies based in Spain
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 140 companies tracked

RevenueBase identified 140 online marketplace advertising agencies headquartered in Spain as of September 2026 and tracks 1,015 professional contacts across them, including 157 with verified work emails. Madrid is the largest hub.

This list covers online marketplace advertising agencies headquartered in Spain, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 29, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 29, 2026 86% judged on-target in blind review

140Companies

1,015Contacts tracked

157Verified emails

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The 25 largest online marketplace advertising agencies based in Spain

Ranked by team size

Top 25 of 140 online marketplace advertising agencies based in Spain, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to online marketplace advertising agencies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Antevenio	Partial evidence	Madrid, SpainHQ checked Sep 29, 2026	51-200	77 contacts →
	Partial evidence “Antevenio es una empresa que opera en el sector de la publicidad y el marketing online.” Source: RevenueBase Database · checked Sep 29, 2026
2	Viva Conversion	Partial evidence	Valencia Valencia, SpainHQ checked Sep 29, 2026	11-50	55 contacts →
	Partial evidence “Necesitas mejorar el rendimiento de tu negocio online?” Source: RevenueBase Database · checked Sep 29, 2026
3	Roicos Amazon, Marketplaces & Ecommerce Agencia Retail Online	Partial evidence	Mataró, SpainHQ checked Sep 29, 2026	11-50	35 contacts →
	Partial evidence “Roicos es una Agencia de Retail Online.” Source: RevenueBase Database · checked Sep 29, 2026
4	Media Adgo	Partial evidence	Barcelona, SpainHQ checked Sep 29, 2026	11-50	32 contacts →
	Partial evidence “Media ADgo is an Online Marketing agency specialized in providing Digital Marketing Solutions 360 for our advertisers and publishers.” Source: RevenueBase Database · checked Sep 29, 2026
5	Marketalia Marketing Online	Partial evidence	Madrid, SpainHQ checked Sep 29, 2026	11-50	31 contacts →
	Partial evidence “Nuestro Objetivo como agencia de publicidad online es potenciar el negocio de nuestros clientes mediante la implementación de estrategias de marketing online para alcanzar sus…” Source: RevenueBase Database · checked Sep 29, 2026
6	Jevnet	Partial evidence	Barcelona, SpainHQ checked Sep 29, 2026	11-50	30 contacts →
	Partial evidence “Online Marketing Agency leader in the management and optimization of SEM campaigns.” Source: RevenueBase Database · checked Sep 29, 2026
7	KNN Digital Media	Indirect evidence	Madrid, SpainHQ checked Sep 29, 2026	11-50	29 contacts →
	Indirect evidence “KNN Digital Media is a global e-commerce company leveraging performance marketing, media, and machine learning to deliver measurable growth for brands across multiple industries.” Source: RevenueBase Database · checked Sep 29, 2026
8	Widitrade	Indirect evidence	Las Rozas De Madrid, SpainHQ checked Sep 29, 2026	11-50	29 contacts →
	Indirect evidence “Facing the new reality of E-commerce for both Publishers and Advertisers, We at Widitrade brings you the platform with all the technology to provide you solutions:*Publishers…” Source: RevenueBase Database · checked Sep 29, 2026
9	Roas Hunter	Indirect evidence	Valencia, SpainHQ checked Sep 29, 2026	11-50	28 contacts →
	Indirect evidence “Agencia de publicidad digital especializada en gestión y dirección estratégica de e-commerce \| Google Business Partners \| Expertos en Facebook Ads, Google Ads & Tiktok Ads \| 40M €…” Source: RevenueBase Database · checked Sep 29, 2026
10	Twinred	Partial evidence	Barcelona, SpainHQ checked Sep 29, 2026	11-50	26 contacts →
	Partial evidence “TwinRed is a leading service provider in the digital advertising sector, offering both self-service and openRTB capabilities to its clients.” Source: RevenueBase Database · checked Sep 29, 2026
11	Wemass	Strong evidence	Madrid, SpainHQ checked Sep 29, 2026	11-50	24 contacts →
	Strong evidence “The advertising Marketplace that groups the main spanish digital media groups” Source: RevenueBase Database · checked Sep 29, 2026
12	Reda Marketing	Partial evidence	Marbella, SpainHQ checked Sep 29, 2026	1-10	24 contacts →
	Partial evidence “You know Online ads is the key to automating and growing your business, but frankly - most have NO CLUE how to even go about promoting and selling their products and services…” Source: RevenueBase Database · checked Sep 29, 2026
13	Visionclick SL	Partial evidence	Malaga, SpainHQ checked Sep 29, 2026	11-50	17 contacts →
	Partial evidence “Somos una agencia de marketing online y publicidad formada por un equipo de más de 20 profesionales.” Source: RevenueBase Database · checked Sep 29, 2026
14	Reetmo Media	Indirect evidence	Madrid, SpainHQ checked Sep 29, 2026	11-50	13 contacts →
	Indirect evidence “REETMO es una Red Premium de Retail Media que ayuda a las marcas y sus agencias a planificar sus campañas digitales en Retail Media, para que obtengan la máxima rentabilidad de…” Source: RevenueBase Database · checked Sep 29, 2026
15	E-Retail Advertising	Strong evidence	Alcobendas - Madrid, SpainHQ checked Sep 29, 2026	11-50	11 contacts →
	Strong evidence “e-retail advertising es una red de publicidad online especializada en la gestión en exclusiva de páginas de comercio electrónico y distribución.” Source: RevenueBase Database · checked Sep 29, 2026
16	Media Needs	Partial evidence	Reus, SpainHQ checked Sep 29, 2026	1-10	10 contacts →
	Partial evidence “Media Needs es una empresa especializada en servicios integrales de publicidad, marketing online y community manager.” Source: RevenueBase Database · checked Sep 29, 2026
17	EL Club DE LA Radio	Partial evidence	Pozuelo De Alarcón, SpainHQ checked Sep 29, 2026	11-50	10 contacts →
	Partial evidence “Somos la primera y única plataforma online que te permite como anunciante contratar tu publicidad en radio de una forma sencilla, eficiente y sin intermediarios.” Source: RevenueBase Database · checked Sep 29, 2026
18	ALL In Digital Marketing	Partial evidence	Madrid, SpainHQ checked Sep 29, 2026	1-10	9 contacts →
	Partial evidence “Agencia de marketing online especializada en la creación y gestión de tiendas online así como en campañas publicitarias en Google Adwords” Source: RevenueBase Database · checked Sep 29, 2026
19	Beapolo	Indirect evidence	Barcelona, SpainHQ checked Sep 29, 2026	1-10	8 contacts →
	Indirect evidence “BeApolo es una plataforma de compra de espacios en nuevos canales digitales.” Source: RevenueBase Database · checked Sep 29, 2026
20	Swarmiz	Indirect evidence	Barcelone, SpainHQ checked Sep 29, 2026	11-50	8 contacts →
	Indirect evidence “SwarmiZ est une régie publicitaire spécialisée dans le marketing digital à la performance.” Source: RevenueBase Database · checked Sep 29, 2026
21	AZUMI	Partial evidence	Valencia, SpainHQ checked Sep 29, 2026	1-10	8 contacts →
	Partial evidence “Hacemos crecer proyectos y marcas a través de la visibilidad y autoridad que aporta Amazon como plataforma de venta online.” Source: RevenueBase Database · checked Sep 29, 2026
22	Digital Club Operations	Partial evidence	Majadahonda, SpainHQ checked Sep 29, 2026	11-50	7 contacts →
	Partial evidence “Agencia de Marketplaces especializada en proporcionar servicios personalizados que se adapten a las necesidades de todos nuestros clientes.” Source: RevenueBase Database · checked Sep 29, 2026
23	Mediashoppers	Partial evidence	Madrid, SpainHQ checked Sep 29, 2026	1-10	7 contacts →
	Partial evidence “Nace una pequeña revolución, un nuevo modo de comercialización en la publicidad online, una vuelta a los orígenes.” Source: RevenueBase Database · checked Sep 29, 2026
24	Tywenn Strategy	Partial evidence	Madrid, SpainHQ checked Sep 29, 2026	1-10	4 contacts →
	Partial evidence “Tywenn Strategy es una Agencia de Marketing Online, especializada en la gestión de publicidad en varios idiomas en Google, Bing y Yahoo a través de las herramientas de Google…” Source: RevenueBase Database · checked Sep 29, 2026
25	Ubika Internet Consultors	Partial evidence	Riudellots De La Selva, SpainHQ checked Sep 29, 2026	1-10	4 contacts →
	Partial evidence “Consultoria de publicidad y marketing online.” Source: RevenueBase Database · checked Sep 29, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: online marketplace advertising agencies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names online marketplace advertising agencies.
Partial evidence: Its own public description names part of online marketplace advertising agencies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name online marketplace advertising agencies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 140 online marketplace advertising agencies based in Spain

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Online marketplace advertising agencies based in Spain at a glance

As of Sep 29, 2026

15.5%Verified-email coverage

7.2Average contacts per company

1-10Median size (employees)

30.7%Largest-city concentration · Madrid

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

100

11-50

51-200

201-500

Email recency for this list is measured worldwide rather than for Spain, so it is reported there. Company counts and contact totals on this page are exact for Spain, over 140 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among online marketplace advertising agencies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Spain whose own description of what they do matches “online marketplace advertising agencies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names online marketplace advertising agencies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among online marketplace advertising agencies, and records with no verified work email. Companies headquartered outside Spain are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 157 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 29, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Online marketplace advertising agencies by metro

Online marketplace advertising agencies in Madrid43

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names online marketplace advertising agencies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many online marketplace advertising agencies are there based in Spain?

RevenueBase identified 140 online marketplace advertising agencies headquartered in Spain as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Antevenio, headquartered in Madrid, tops this list with the largest team on record.

Which city has the most online marketplace advertising agencies?

Madrid leads with 43 headquartered companies, followed by Barcelona (23) and Valencia (12).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 157 verified decision-maker contacts tracked across these 140 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 29, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.