Company lists · Data refreshed September 2026

Top 12 Customer service outsourcing companies based in Madrid, Spain

RevenueBase identified 64 company matches for customer service outsourcing companies associated with Madrid, Spain as of September 2026 and tracks 111,600 professional contacts across them, including 7,478 with verified work emails and 551 with mobile numbers. Across Spain, Madrid is the largest hub for this category.

This list covers company matches for customer service outsourcing companies associated with Madrid, Spain, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 10, 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 10, 2026 How this list was built
64Companies
111,600Contacts tracked
7,478Verified emails
551Mobile numbers
Explore this list → Free signup · no credit card · 500 free credits

The 12 largest customer service outsourcing companies based in Madrid, Spain

Ranked by team size
Top 12 of 64 company matches for customer service outsourcing companies based in Madrid, Spain, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 10, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchMadrid, SpainHQ recorded Sep 10, 202610001+23,763 contacts →

Exact match

“Konecta is a leading innovative global service provider in customer management business process outsourcing, with passionate employees working in 40 languages across 4 continents…”

Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
2Exact matchMadrid, SpainHQ recorded Sep 10, 202610001+3,716 contacts →

Exact match

“is a tech company specialized in providing, and for.”

Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
3Exact matchMadrid, SpainHQ recorded Sep 10, 20265,001-10,0001,447 contacts →

Exact match

“Grupo Marktel es un grupo empresarial que ofrece soluciones globales a sus clientes en el ámbito de la externalziación de servicios con el máximo nivel de especialización en las…”

Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
4Exact matchMadrid, SpainHQ recorded Sep 10, 2026n/a1,306 contacts →

Exact match

“At Unisono, for more than 20 years we have been working side by side with our customers across the globe to meet their demands as well as our own.”

Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
5Exact matchMadrid, SpainHQ recorded Sep 10, 202610001+612 contacts →

Exact match

“Somos Arvato, diseñamos, ofrecemos y marcamos la diferencia en el servicio de atención al cliente que prestamos en nombre de algunas de las marcas más respetadas del mundo.”

Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
6Exact matchMadrid, SpainHQ recorded Sep 10, 20261,001-5,000284 contacts →

Exact match

“Be Call Group, empresa española que presta soluciones globales a las necesidades de comunicación entre empresa y cliente.”

Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
7Exact matchMadrid, SpainHQ recorded Sep 10, 20261,001-5,000143 contacts →

Exact match

“Grupo Alarcon somos una empresa de limpieza especialista en la externalización de servicios de elevada calidad.”

Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
8Exact matchMadrid, SpainHQ recorded Sep 10, 202651-20087 contacts →

Exact match

“Codeactivos Outsourcing Services, es una compañía experta en externalización de procesos de negocio y la gestión de experiencias en servicio, prestando soluciones como…”

Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
9Exact matchMadrid, SpainHQ recorded Sep 10, 2026501-1,00074 contacts →

Exact match

“Cosmos es un Call Center ofrece a sus clientes un servicio omnicanal de última tecnología desde sus centros en España, Rumanía, Paraguay y Marruecos.”

Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
10Exact matchMadrid, SpainHQ recorded Sep 10, 2026n/a22 contacts →

Exact match

“Majorel creates amazing customer experiences that consumers love and we are proud of.”

Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
11Exact matchMadrid, SpainHQ recorded Sep 10, 202611-5015 contacts →

Exact match

“Somos líderes en externalización de procesos de negocio (BPO) altamente sensibles por su impacto sobre clientes o por su criticidad interna, como son los de las áreas comercial…”

Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase
12Exact matchMadrid, SpainHQ recorded Sep 10, 20261-106 contacts →

Exact match

“S4U connects technology, business and growth within the Digital Infrastructure ecosystem.”

Recorded in the RevenueBase company graph · Sep 10, 2026 · View company records in RevenueBase

Showing 12 of 64 customer service outsourcing companies based in Madrid, Spain

See the full list, filter by size, metro and specialty, and access 7,478 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Customer service outsourcing companies based in Madrid, Spain at a glance

As of Sep 10, 2026
6.7%Verified-email coverage
0.5%Mobile-number coverage
1743.8Average contacts per company
11-50Median size (employees)
Sep 10, 2026Page data refreshed

Companies by employee count

1-10
17
11-50
16
51-200
7
201-500
3
501-1,000
5
1,001-5,000
8
5,001-10,000
2
10001+
6

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 13.0d

Company record updated

Median 82.0d

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

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
Company records associated with Madrid, Spain whose business descriptions match “customer service outsourcing companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 7,478 professional contacts with verified work emails across the full matched dataset. 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 10, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Customer service outsourcing companies by metro in Spain

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “customer service outsourcing companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many customer service outsourcing companies are there based in Madrid, Spain?

RevenueBase identified 64 company matches for customer service outsourcing companies associated with Madrid, Spain as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Konecta tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in Spain has the most customer service outsourcing companies?

Madrid leads Spain with 62 company records, followed by Barcelona (42) and Malaga (8).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 7,478 professional contacts with verified work emails tracked across these 64 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 10, 2026.

Ready to reach these companies? Verified emails and direct dials for all 64 customer service outsourcing companies based in Madrid, Spain. Start with a free account, no credit card.

Download this list →

Related lists

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.