Company lists · Data refreshed September 2026
Top 25 Customer agencies based in Germany
RevenueBase identified 385 customer agencies headquartered in Germany as of September 2026 and tracks 10,004 professional contacts across them, including 3,478 with verified work emails. Berlin is the largest hub.
This list covers customer agencies headquartered in Germany, 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 21, 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.
The 25 largest customer agencies based in Germany
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,298 contacts → | ||||
Indirect evidence “Serviceplan Group is the largest independent, partner-led agency group in Europe.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 2 | 697 contacts → | ||||
Strong evidence “SAP Customer Experience (SAP CX) and CRM solutions; the agentic solution for marketing, commerce, sales, and service, and the operations behind them.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 3 | 620 contacts → | ||||
Indirect evidence “Die Avedo Gruppe ist einer der führenden deutschlandweiten Dialogmarketingspezialisten mit Firmenhauptsitz in Leipzig sowie sechs Call Centern in Essen, Gelsenkirchen, Köln…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 4 | 424 contacts → | ||||
Indirect evidence “Jung von Matt is – in terms of awards for both creativity and efficiency – the most successful advertising agency group in German-speaking countries.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 5 | 364 contacts → | ||||
Indirect evidence “TERRITORY ist eine Agenturgruppe für integrierte, wirkungsorientierte Kommunikation.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 6 | 359 contacts → | ||||
Indirect evidence “The SELLBYTEL Group is one of the worldwide leading outsourcing specialists and part of Webhelp.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 7 | 336 contacts → | ||||
Strong evidence “We are The Retail Performance Company (rpc), the consulting firm dedicated to the entire process of customer-centric transformation: from strategy, via customer experience design…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 8 | 303 contacts → | ||||
Indirect evidence “gevekom - Your better place to work.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 9 | 294 contacts → | ||||
Indirect evidence “KIKXXL wurde von Andreas Kremer gegründet.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 10 | 257 contacts → | ||||
Indirect evidence “DCS Communication Center, your "Global Partner" in costumer management business process outsourcing since 1995.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 11 | 237 contacts → | ||||
Strong evidence “AMEVIDA is one of the largest owner-managed companies in the German call center and customer care industry and is headquartered in Gelsenkirchen.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 12 | 212 contacts → | ||||
Strong evidence “SYBIT is Europe's leading full-service provider for customer experience (CX) with comprehensive expertise in business consulting, process consulting and IT consulting.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 13 | 199 contacts → | ||||
Indirect evidence “Grabarz & Partner is an independent, owner-managed advertising agency and among the most creative agencies in Germany and the world.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 14 | 168 contacts → | ||||
Strong evidence “Consulting, Technology & Solutions für Customer Service, Sales & Marketing Wir sind überzeugt: Echter Erfolg entsteht dort, wo Unternehmen ihre Kund:innen konsequent in den…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 15 | 136 contacts → | ||||
Strong evidence “infinit.cx group - The Customer Experience Powerhouse DIE Experten für gelungenen Omnikanal-Kundenservice durch Customer-Experience (CX) mit über 40 Jahren Erfahrung in der der…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 16 | 120 contacts → | ||||
Strong evidence “Ströer X ist der größte deutsche Business Process Outsourcing (BPO)-Anbieter und Spezialist für Dialogmarketing, Customer Experience, Sales und digitale Transformation.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 17 | 116 contacts → | ||||
Strong evidence “All for One Customer Experience is an innovative IT service company within the All for One Group with the mission to make companies more successful, faster and more digital based…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 18 | 112 contacts → | ||||
Strong evidence “Newstel Worldwide is a trusted partner to clients across various industries, helping them achieve customer success and grow their businesses through digitally-led customer service…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 19 | 105 contacts → | ||||
Strong evidence “Walter Services ist eines der größten und erfolgreichsten Customer Services-Unternehmen in Deutschland.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 20 | 103 contacts → | ||||
Indirect evidence “We are not just one thing.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 21 | 97 contacts → | ||||
Strong evidence “Since 1992 TAS AG has been providing all-round solutions for customer communications, making it one of Germany's oldest complex full-service operators in dialogue management.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 22 | 88 contacts → | ||||
Indirect evidence “Die exciting AG hat sich auf die Abbildung und Gestaltung von hochwertigen DialogCenter und ServiceCenter-Prozesse spezialisiert.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 23 | 85 contacts → | ||||
Strong evidence “Riverland Reply is the Reply group company specialized in consulting end-to-end customer-oriented solutions and strategies.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 24 | 79 contacts → | ||||
Indirect evidence “Flaixible ist ein junges, dynamisches und ambitioniertes Unternehmen.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 25 | 77 contacts → | ||||
Indirect evidence “KERNKOMPETENZ: CURSOR ist ein führender Anbieter von Software und Beratung für das Kunden- und Geschäftsprozessmanagement (CRM und BPM).” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
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: customer 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 customer agencies.
- Partial evidence
- Its own public description names part of customer agencies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name customer 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 385 customer agencies based in Germany
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Customer agencies based in Germany at a glance
As of Sep 21, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for Germany, so it is reported there. Company counts and contact totals on this page are exact for Germany, over 385 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 customer 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 Germany whose own description of what they do matches “customer 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 customer 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 customer agencies, and records with no verified work email. Companies headquartered outside Germany 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, 3,478 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 21, 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.
Customer agencies by metro
- Customer agencies in Berlin33
- Customer agencies in Hamburg33
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 customer 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 customer agencies are there based in Germany?
RevenueBase identified 385 customer agencies headquartered in Germany 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?
Serviceplan Group, headquartered in Munich, tops this list with the largest team on record.
Which city has the most customer agencies?
Berlin leads with 33 headquartered companies, followed by Hamburg (33) and Munchen (16).
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 3,478 verified decision-maker contacts tracked across these 385 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 21, 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.
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