Company lists · Data refreshed September 2026

Top 25 Sales development outsourcing companies based in Belgium

Name: Sales development outsourcing companies based in Belgium
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 6, 2026 87 companies tracked

RevenueBase identified 87 sales development outsourcing companies headquartered in Belgium as of September 2026 and tracks 701 professional contacts across them, including 142 with verified work emails and 37 with mobile numbers. Antwerpen is the largest hub.

This list covers sales development outsourcing companies headquartered in Belgium, 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.

How to read this list HQ checked on every row Match evidence on every row Refreshed Sep 6, 2026 86% judged on-target in blind review

87Companies

701Contacts tracked

142Verified emails

37Mobile numbers

Explore all 87 companies → Free signup · no credit card · 500 free credits

The 25 largest sales development outsourcing companies based in Belgium

Ranked by team size

Top 25 of 87 sales development outsourcing companies based in Belgium, ranked by team size, largest first. Data refreshed Sep 6, 2026. Evidence rates how directly each company's own description names sales development outsourcing companies: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	Sales ConsultStrong evidence	Brussels, BelgiumHQ checked Sep 6, 2026	11-50	89
	“Sales Consult is specialised in sales results improvement by different services approaches - Sales Consultancy - Outsourcing - Try & Hire - Insourcing projects - Temporary sales &…” Source: company website · checked Sep 6, 2026
2	Victus SalesIndirect evidence	Genk, BelgiumHQ checked Sep 6, 2026	51-200	76
	“Meer klanten, sterkere verkopers en een strategie die écht werkt.” Source: company website · checked Sep 6, 2026
3	AgidriveIndirect evidence	Louvain-la-neuve, BelgiumHQ checked Sep 6, 2026	11-50	41
	“Agidrive aide les entreprises à se développer au niveau commercial en prospectant pour elles tout en permettant à nos collaborateurs de vivre une expérience professionnelle…” Source: company website · checked Sep 6, 2026
4	PHCOMIndirect evidence	Brussels, BelgiumHQ checked Sep 6, 2026	11-50	37
	“PHCom stands for Performance and Harmony in Commercial Services.” Source: company website · checked Sep 6, 2026
5	SaleswiseIndirect evidence	Herentals, BelgiumHQ checked Sep 6, 2026	11-50	36
	“Bij SalesWise geloven we dat vertrouwen de basis is voor succesvolle verkoop.” Source: company website · checked Sep 6, 2026
6	Best Next ContactIndirect evidence	Mechelen, BelgiumHQ checked Sep 6, 2026	11-50	31
	“Every proactive customer- or prospect contact, should be relevant, generate value and be surprisingly pleasant for ALL stakeholders.” Source: company website · checked Sep 6, 2026
7	HuntsmenPartial evidence	Kontich, BelgiumHQ checked Sep 6, 2026	11-50	29
	“Huntsmen is jouw partner in het faciliteren van groei en zelfvoorzienend worden op vlak van sales door strategische en operationele salesondersteuning in de IT-branche.” Source: company website · checked Sep 6, 2026
8	Brand Partners SAIndirect evidence	Waterloo, BelgiumHQ checked Sep 6, 2026	51-200	15
	“Brand-Partners est une société de développement commercial spécialisée notamment dans le conseil commercial, le développement de plans de prospection, la mise à disposition de…” Source: company website · checked Sep 6, 2026
9	Passion4salesPartial evidence	Ronse, BelgiumHQ checked Sep 6, 2026	51-200	13
	“Passion4Sales is a young and dynamic company founded in June 2013 and was created to help companies grow in sales and top line revenue.” Source: company website · checked Sep 6, 2026
10	Captar BVPartial evidence	Schulen, BelgiumHQ checked Sep 6, 2026	1-10	12
	“Captar bv is sterk in sales-ready marketing.” Source: company website · checked Sep 6, 2026
11	LeadscorePartial evidence	Gent, BelgiumHQ checked Sep 6, 2026	11-50	11
	“Leadscore helpt bedrijven hun salespotentieel objectief te meten via Sales Due Diligence.” Source: company website · checked Sep 6, 2026
12	Riseup SolutionsIndirect evidence	Elsene, BelgiumHQ checked Sep 6, 2026	11-50	9
	“Notre mission : Nous nous occupons de vos ventes, vous vous occupez du livrable!” Source: company website · checked Sep 6, 2026
13	SellentPartial evidence	Antwerp, BelgiumHQ checked Sep 6, 2026	1-10	8
	“Sellent helps B2B companies structure their sales process to win new customers, through targeted lead generation, consistent follow-up, and smart use of data and tools.” Source: company website · checked Sep 6, 2026
14	Yello TelemarketingIndirect evidence	Kortrijk, BelgiumHQ checked Sep 6, 2026	1-10	7
	“Veel bedrijven willen groeien, maar hebben niet genoeg tijd voor actieve prospectie.” Source: company website · checked Sep 6, 2026
15	WinpeoPartial evidence	Brussels, BelgiumHQ checked Sep 6, 2026	11-50	7
	“WinPeo helps companies grow in Europe and globally by building and operating high-performing sales systems.” Source: company website · checked Sep 6, 2026
16	NevecoIndirect evidence	Bruges, BelgiumHQ checked Sep 6, 2026	11-50	6
	“Your strategic partner in growth.” Source: company website · checked Sep 6, 2026
17	In The LeadPartial evidence	Roeselare, BelgiumHQ checked Sep 6, 2026	1-10	5
	“Met In The Lead helpen we vooral B2B-bedrijven in het genereren van kwalitatieve leads én zorgen we voor ondersteuning van de sales bij het verwerken ervan.” Source: company website · checked Sep 6, 2026
18	CrumbsIndirect evidence	Ghent, BelgiumHQ checked Sep 6, 2026	1-10	5
	“Grow revenue twice as fast with half as many salespeople.” Source: company website · checked Sep 6, 2026
19	DE Commerce BVPartial evidence	Wellen, BelgiumHQ checked Sep 6, 2026	1-10	4
	“De Commerce is een sales en marketing bureau.” Source: company website · checked Sep 6, 2026
20	Toolbox AgencyIndirect evidence	Oostkamp, BelgiumHQ checked Sep 6, 2026	11-50	3
	“Toolbox reikt je de strategie, ideeën, inhoud en tools aan om je doelpubliek te bereiken en meer leads te creëren.” Source: company website · checked Sep 6, 2026
21	SalesdriversIndirect evidence	Antwerpen, BelgiumHQ checked Sep 6, 2026	11-50	2
	“Bij Salesdrivers combineren we passie, expertise en een scherpe focus op resultaat met één doel: de commerciële motor van jouw organisatie sterker maken.” Source: company website · checked Sep 6, 2026
22	MJ Sales & MarketingPartial evidence	Gent, BelgiumHQ checked Sep 6, 2026	11-50	2
	“MJ SALES & MARKETING staat klaar om uw bedrijf te versterken door uw sales- en marketinginspanningen te ondersteunen.” Source: company website · checked Sep 6, 2026
23	SellsiorPartial evidence	Mechelen, BelgiumHQ checked Sep 6, 2026	11-50	2
	“Sellsior, jouw partner voor Sales Excellence in de IT-branche!” Source: company website · checked Sep 6, 2026
24	Call-2actionPartial evidence	Gijzenzele, BelgiumHQ checked Sep 6, 2026	1-10	2
	“De toekomst van iedere onderneming houdt in dat er moet gezorgd worden voor beweging in de Sales en Marketing waarbij het zoeken en vinden van de juiste prospecten het meest…” Source: company website · checked Sep 6, 2026
25	Project NimiumPartial evidence	Heisbroek, BelgiumHQ checked Sep 6, 2026	1-10	1
	“Founded in 2019, Nimium is helping sales-driven B2B companies turn prospects into customers and customers into advocates.” Source: company website · checked Sep 6, 2026

Showing 25 of 87 sales development outsourcing companies based in Belgium

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Sales development outsourcing companies based in Belgium at a glance

As of Sep 6, 2026

1-10Median size (employees)

AntwerpenLargest hub · 6 HQs

37Contacts with mobile numbers

Sep 6, 2026Data refreshed

Companies by employee count

1-10

11-50

51-200

Verified emails by last verification

0–30

127

31–60

61–90

90–180

180+

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 development 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 Belgium whose own description of what they do matches “sales development 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 development outsourcing companies, and records with no verified work email. Companies headquartered outside Belgium 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, 142 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.

Frequently asked

How many sales development outsourcing companies are there based in Belgium?

RevenueBase identified 87 sales development outsourcing companies headquartered in Belgium 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?

Sales Consult, headquartered in Brussels, tops this list with the largest team on record.

Which city has the most sales development outsourcing companies?

Antwerpen leads with 6 headquartered companies, followed by Brussels (4) and Bruxelles (3).

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 142 verified decision-maker contacts tracked across these 87 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.