Company lists · Data refreshed September 2026
Top 25 Sales support outsourcing companies based in Germany
RevenueBase identified 245 sales support outsourcing companies headquartered in Germany as of September 2026 and tracks 2,557 professional contacts across them, including 510 with verified work emails and 44 with mobile numbers. Berlin is the largest hub.
This list covers sales support outsourcing companies 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, how directly it supports the match, and when it was last checked. Data refreshed September 6, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 sales support outsourcing companies based in Germany
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 359 | ||||
“The SELLBYTEL Group is one of the worldwide leading outsourcing specialists and part of Webhelp.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 2 | 188 | ||||
“Als Vertriebspartner von B2B-Unternehmen steigern wir seit über 20 Jahren Umsätze, gewinnen neue Kunden und heben ungenutzte Marktpotenziale.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 3 | 76 | ||||
Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 4 | 73 | ||||
“Wir sind führender und weltweit agierender Dienstleister für Vertriebsunterstützung und sind seit über 40 Jahren für unsere namhaften Kunden am Point of Sale unterwegs.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 5 | 56 | ||||
“Gegründet um anders zu sein.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 6 | 54 | ||||
“Max ASP is a professional inside sales-as-a-service and CRM consulting provider, specialized in industrial machinery and components, and complex industries, across global markets.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 7 | 44 | ||||
“Wir setzen auf erfolgreiches Wachstum unserer Partner und sind Spezialisten im Bereich Sales, Service & Dialogmarketing.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 8 | 37 | ||||
“For over 30 years, we have been helping companies with technically complex products and services that require explanation to achieve predictable and sustainable growth -…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 9 | 32 | ||||
“Vertrieblicher Erfolg ist unser Maßstab - COMPRiS ist einer der führenden B2B-Full-Service Anbieter für die Bereiche der Kunden- und Partner-Identifikation, Segmentierung sowie…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 10 | 28 | ||||
“Die voxpark GmbH ist ein etabliertes und wachsendes Kundenservice-Center, das sich erfolgreich in den Bereichen Telemarketing und ganzheitliches Kundenmanagement positioniert hat.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 11 | 27 | ||||
“DER BESSERE WEG ZU IHREN B2B-KUNDEN plicatec ist der führende Vertriebsdienstleister für Unternehmen aus IT, Tech, High-Tech, Engineering und Unternehmen mit komplexen Lösungen…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 12 | 24 | ||||
“Wer wir sind: triveo | Telemarketing steht seit über 19 Jahren für messbare und professionelle B2B-Kundenakquise.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 13 | Communicall GmbhIndirect evidence | 24 | |||
“Ihre Marke ist unsere Botschaft Business Dialog ist unsere Stärke, effektive Vertriebsarbeit und optimales Kundenmarketing sind das A und O unserer Arbeit.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 14 | 23 | ||||
“Wir sind Ihr Premium Partner für den telefonischen sowie digitalen Vertrieb.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 15 | 23 | ||||
“DIGITAL DIALOG ist eine der führenden B2B TeleSales Agenturen in Deutschland – mit Standorten in der Metropolregion Rhein-Main sowie Berlin/Potsdam.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 16 | 22 | ||||
“Digitization and scaling through predictable new customer and employee acquisition.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 17 | 21 | ||||
“Callcenter-Services, Telesales, Kundenservice” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 18 | 19 | ||||
“Den roten oder den blauen Draht kappen?” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 19 | 17 | ||||
“Mediaphon Telemarketing GmbH steht für qualitativ hochwertiges Telemarketing Wir beraten telefonisch mehr als Bestandskunden aller Branchen im B2B und begleiten klein- und…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 20 | 15 | ||||
“AVESKA leistet hochprofessionelle Vertriebsunterstützung für Midrange und Enterprise Unternehmen aus dem IT-Bereich.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 21 | 15 | ||||
“Möchten Sie hoch hinaus und die Bekanntheit Ihres Produkts oder Ihrer Dienstleistung unter Entscheidern steigern?” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 22 | 15 | ||||
“Wünschen Sie sich begeisterte Interessenten und motivierte Mitarbeiter?” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 23 | 14 | ||||
“As an outsourcing company with headquarters in Germany and Ukraine, we specialize in SEO, Web development and Software development.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 24 | 13 | ||||
“UNSER SPEZIALGEBIET Hörer und Flamme ist Beratungshaus und Dienstleister.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 25 | 13 | ||||
“Dienstleister für die Bereitstellung von B2B Vertriebsteams & Vertriebsentwicklung.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 245 sales support outsourcing companies based in Germany
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Sales support outsourcing companies based in Germany at a glance
As of Sep 6, 2026Companies by employee count
Verified emails by last verification
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 sales support outsourcing companies, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in Germany whose own description of what they do matches “sales support outsourcing companies”. Matching reads each company's description, not its industry code or its name.
- What we exclude
- Companies whose own description does not clearly place them among sales support outsourcing companies, 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 an evidence 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, 510 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 6, 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.
Sales support outsourcing companies by metro
- Sales support outsourcing companies in Berlin25
Frequently asked
How many sales support outsourcing companies are there based in Germany?
RevenueBase identified 245 sales support outsourcing companies 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?
Sellbytel Group, headquartered in Nuremberg, tops this list with the largest team on record.
Which city has the most sales support outsourcing companies?
Berlin leads with 25 headquartered companies, followed by Hamburg (12) and Dusseldorf (8).
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 510 verified decision-maker contacts tracked across these 245 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 6, 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 SmartSearch, 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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