Company lists · Data refreshed September 2026
Top 25 Phone sales outsourcing companies based in Spain
RevenueBase identified 152 phone sales outsourcing companies headquartered in Spain as of September 2026 and tracks 6,305 professional contacts across them, including 347 with verified work emails. Madrid is the largest hub.
This list covers phone sales outsourcing companies 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.
The 25 largest phone sales outsourcing companies based in Spain
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 3,716 contacts → | ||||
Indirect evidence “is a tech company specialized in providing, and for.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 305 contacts → | ||||
Partial evidence “The SELLBYTEL Group is one of the worldwide leading outsourcing specialists and part of Webhelp.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 276 contacts → | ||||
Indirect evidence “Accept@ Servicios Integrales es una empresa especializada en la venta telefónica que pertenece al Grupo Santalucia.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 194 contacts → | ||||
Indirect evidence “BNZSA, powered by Anteriad is a leading marketing agency specialising in tele-based demand generation with a team of more than 350 who are experts in delivering qualified…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 157 contacts → | ||||
Indirect evidence “Somos un contact center especializado en gestión, venta y atención al cliente.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 6 | 142 contacts → | ||||
Indirect evidence “Somos una empresa fundada en 2004 especializada en Servicios de Telemarketing y atención al cliente.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 82 contacts → | ||||
Partial evidence “En North Market ayudamos a empresas a crecer en ventas mediante outsourcing comercial: diseñamos, seleccionamos, formamos y gestionamos equipos de venta a medida para alcanzar…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 75 contacts → | ||||
Partial evidence “Nordic Operation Center is a business process outsourcer (BPO), specialising in customer experience, sales and marketing services via all communication channels including voice…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 74 contacts → | ||||
Indirect evidence “Cosmos es un Call Center ofrece a sus clientes un servicio omnicanal de última tecnología desde sus centros en España, Rumanía, Paraguay y Marruecos.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 40 contacts → | ||||
Indirect evidence “CONSTRUIMOS CLIENTES Proporcionamos soluciones de externalización a medida para empresas que necesitan agilidad, flexibilidad y resultados.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 39 contacts → | ||||
Indirect evidence “Proporcionamos soluciones a la creciente necesidad de empresas que buscan mejorar sus relaciones con sus clientes a través de un servicio avanzado, profesionalizado y multicanal…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 30 contacts → | ||||
Indirect evidence “Vacolba es un partner de negocio orientado a la venta en el entorno digital.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 26 contacts → | ||||
Indirect evidence “Somos el CONTACT CENTER para los MOMENTOS DE LA VERDAD < 15 años ofreciendo un servicio de atención al cliente de alto valor añadido.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 25 contacts → | ||||
Partial evidence “Call Center Barcelona is made up of a team of dedicated professionals offering a unique outsourcing service.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 24 contacts → | ||||
Indirect evidence “Golden Line dispone de “300” puestos que utilizan la tecnología más avanzada en tratamiento de voz y datos.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 23 contacts → | ||||
Indirect evidence “En TM System Contact Center desarrollamos campañas para tu empresa de Televentas, Telemarketing y Atención al Cliente.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 22 contacts → | ||||
Partial evidence “En Happytel ofrecemos soluciones personalizadas de servicios Outsourcing Comercial adaptado a sus necesidades dando un servicio integral de calidad asegurando una alta calidad de…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 21 contacts → | ||||
Indirect evidence “Agencia de publicidad y Marketing.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 18 contacts → | ||||
Indirect evidence “We are helping ambitious businesses to accelerate their customer acquisition by generating high volumes of Leads.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 17 contacts → | ||||
Indirect evidence “Todo empieza aquí.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 16 contacts → | ||||
Partial evidence “CAPERVA offers a modern concept of outsourced front-sales force to best international process equipment and components manufacturers within Spain and Portugal, providing added…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 16 contacts → | ||||
Indirect evidence “Give2Get es una empresa de servicios de marketing directo, externalización del proceso de ventas e inteligencia de mercado orientada al sector IT.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 15 contacts → | ||||
Partial evidence “naifman drives growth for tech companies with B2B consulting and outsourced sales.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 10 contacts → | ||||
Indirect evidence “En Grupo Tasfor amamos las ventas.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 25 | 9 contacts → | ||||
Indirect evidence “EXTERNALIZACIÓN COMERCIAL DE ALTO VALOR AÑADIDO - Concertación de Visitas de Alto Rendimiento (visitas que generan oportunidades de venta)- Externalización de equipos comerciales…” Source: RevenueBase Database · checked Sep 29, 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: phone sales outsourcing companies. 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 phone sales outsourcing companies.
- Partial evidence
- Its own public description names part of phone sales outsourcing companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name phone sales outsourcing companies. 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 152 phone sales outsourcing companies based in Spain
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Phone sales outsourcing companies based in Spain at a glance
As of Sep 29, 2026Companies by employee count
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 152 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 phone sales outsourcing companies, 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 “phone sales outsourcing companies”. 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 phone sales outsourcing companies), 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 phone sales outsourcing companies, 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, 347 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.
Phone sales outsourcing companies by metro
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 phone sales outsourcing companies, 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 phone sales outsourcing companies are there based in Spain?
RevenueBase identified 152 phone sales outsourcing companies 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?
GSS Global Sales Solutions, headquartered in Madrid, tops this list with the largest team on record.
Which city has the most phone sales outsourcing companies?
Madrid leads with 38 headquartered companies, followed by Barcelona (25) and Malaga (6).
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 347 verified decision-maker contacts tracked across these 152 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.
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