Company lists · Data refreshed September 2026

Top 25 Inside sales outsourcing companies based in Spain

Name: Inside sales outsourcing companies based in Spain
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 176 companies tracked

RevenueBase identified 176 inside sales outsourcing companies headquartered in Spain as of September 2026 and tracks 2,664 professional contacts across them, including 200 with verified work emails. Madrid is the largest hub.

This list covers inside 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 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 21, 2026 86% judged on-target in blind review

176Companies

2,664Contacts tracked

200Verified emails

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The 25 largest inside sales outsourcing companies based in Spain

Ranked by team size

Top 25 of 176 inside sales outsourcing companies based in Spain, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to inside sales outsourcing companies: 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	Winche Redes Comerciales	Indirect evidence	Barcelona, SpainHQ checked Sep 21, 2026	501-1,000	359 contacts →
	Indirect evidence “Winche Redes Comerciales es la compañía experta en externalización de la fuerza de Ventas y en la gestión del punto de venta.” Source: RevenueBase Database · checked Sep 21, 2026
2	Sellbytel Group Spain	Partial evidence	Barcelona, SpainHQ checked Sep 21, 2026	5,001-10,000	305 contacts →
	Partial evidence “The SELLBYTEL Group is one of the worldwide leading outsourcing specialists and part of Webhelp.” Source: RevenueBase Database · checked Sep 21, 2026
3	BNZSA	Indirect evidence	Las Rozas De Madrid, SpainHQ checked Sep 21, 2026	201-500	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 21, 2026
4	North Market	Partial evidence	Logroño, SpainHQ checked Sep 21, 2026	51-200	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 21, 2026
5	Nordic Operation Center S.L	Partial evidence	Palma, SpainHQ checked Sep 21, 2026	51-200	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 21, 2026
6	Springboard35	Indirect evidence	Barcelona, SpainHQ checked Sep 21, 2026	51-200	60 contacts →
	Indirect evidence “Business Development Consultancy with a Technology-Driven DNA At Springboard35, we help technology companies (Software / SaaS) sell their solutions, allowing them to focus on…” Source: RevenueBase Database · checked Sep 21, 2026
7	Metafase, Profesionales DE LA Venta Externa	Indirect evidence	Madrid, SpainHQ checked Sep 21, 2026	201-500	54 contacts →
	Indirect evidence “Somos una Compañía de fuerzas de ventas externas dirigida y fundada por profesionales con dilatada experiencia al frente de departamentos de Ventas y Marketing en multinacionales…” Source: RevenueBase Database · checked Sep 21, 2026
8	Nexia Solutions	Indirect evidence	Palma De Mallorca, SpainHQ checked Sep 21, 2026	11-50	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 21, 2026
9	Vacolba	Indirect evidence	Valladolid, SpainHQ checked Sep 21, 2026	51-200	30 contacts →
	Indirect evidence “Vacolba es un partner de negocio orientado a la venta en el entorno digital.” Source: RevenueBase Database · checked Sep 21, 2026
10	Pivote Marketing	Partial evidence	Castelldefels, SpainHQ checked Sep 21, 2026	11-50	26 contacts →
	Partial evidence “Pivote Marketing se especializa en el outsourcing de SDR expertos en la generación de contactos B2B con decisores y directivos.” Source: RevenueBase Database · checked Sep 21, 2026
11	Call Center Barcelona	Partial evidence	Barcelona, SpainHQ checked Sep 21, 2026	51-200	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 21, 2026
12	Heading2market	Partial evidence	Barcelona, SpainHQ checked Sep 21, 2026	11-50	25 contacts →
	Partial evidence “Servicios de Outsourcing Comercial y Marketing Online para aquellas empresas que buscan un crecimiento de ingresos previsible, sostenible y rentable.” Source: RevenueBase Database · checked Sep 21, 2026
13	Telemail	Partial evidence	Alcobendas, SpainHQ checked Sep 21, 2026	51-200	23 contacts →
	Partial evidence “Telemail es una compañia especializada en los Servicios de Outsourcing y Marketing Directo, utilizando para ello tecnologia de ultima generación en Software, impresión y…” Source: RevenueBase Database · checked Sep 21, 2026
14	TM System Contact Center	Indirect evidence	Granada, SpainHQ checked Sep 21, 2026	11-50	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 21, 2026
15	Happytel	Partial evidence	Collado Villalba, SpainHQ checked Sep 21, 2026	51-200	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 21, 2026
16	Tobaccoland Spain	Strong evidence	Valencia, SpainHQ checked Sep 21, 2026	51-200	22 contacts →
	Strong evidence “Sales and marketing services outsourcing for tobacco manufacturers” Source: RevenueBase Database · checked Sep 21, 2026
17	RE Redes Externas Outsourcing S.L	Indirect evidence	Seville, SpainHQ checked Sep 21, 2026	11-50	21 contacts →
	Indirect evidence “Agencia de publicidad y Marketing.” Source: RevenueBase Database · checked Sep 21, 2026
18	C-Onnect	Indirect evidence	Barcelona, SpainHQ checked Sep 21, 2026	11-50	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 21, 2026
19	Comadi	Indirect evidence	Barcelona, SpainHQ checked Sep 21, 2026	11-50	17 contacts →
	Indirect evidence “Todo empieza aquí.” Source: RevenueBase Database · checked Sep 21, 2026
20	Caperva	Partial evidence	Barcelona, SpainHQ checked Sep 21, 2026	11-50	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 21, 2026
21	Give2get	Indirect evidence	Madrid, SpainHQ checked Sep 21, 2026	11-50	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 21, 2026
22	Naifman	Partial evidence	Madrid, SpainHQ checked Sep 21, 2026	1-10	15 contacts →
	Partial evidence “naifman drives growth for tech companies with B2B consulting and outsourced sales.” Source: RevenueBase Database · checked Sep 21, 2026
23	Space Startup	Indirect evidence	Madrid, SpainHQ checked Sep 21, 2026	1-10	14 contacts →
	Indirect evidence “Spacestartup es una agencia moderna, especializada en la externalización de servicios para Startups, con el objetivo de potenciar e incrementar las ventas de sus productos y…” Source: RevenueBase Database · checked Sep 21, 2026
24	Interhanse Outsourcing Services	Indirect evidence	Málaga, SpainHQ checked Sep 21, 2026	11-50	13 contacts →
	Indirect evidence “Services to Insurance Brokers and Insurance Companies.” Source: RevenueBase Database · checked Sep 21, 2026
25	Grupo Tasfor	Indirect evidence	Madrid, SpainHQ checked Sep 21, 2026	51-200	10 contacts →
	Indirect evidence “En Grupo Tasfor amamos las ventas.” Source: RevenueBase Database · checked Sep 21, 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: inside 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 inside sales outsourcing companies.
Partial evidence: Its own public description names part of inside 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 inside 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 176 inside sales outsourcing companies based in Spain

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Inside sales outsourcing companies based in Spain at a glance

As of Sep 21, 2026

7.5%Verified-email coverage

15.1Average contacts per company

1-10Median size (employees)

27.8%Largest-city concentration · Madrid

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

5,001-10,000

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 176 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 inside 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 “inside 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 inside 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 inside 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, 200 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.

Inside sales outsourcing companies by metro

Inside sales outsourcing companies in Madrid49
Inside sales outsourcing companies in Barcelona35

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 inside 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 inside sales outsourcing companies are there based in Spain?

RevenueBase identified 176 inside 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?

Winche Redes Comerciales, headquartered in Barcelona, tops this list with the largest team on record.

Which city has the most inside sales outsourcing companies?

Madrid leads with 49 headquartered companies, followed by Barcelona (35) and Valencia (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 200 verified decision-maker contacts tracked across these 176 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.