Company lists · Data verified August 2026

Top 25 Outbound marketing agencies based in Belgium

Name: Outbound marketing agencies based in Belgium
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 268 companies tracked

There are 268 outbound marketing agencies headquartered in Belgium (RevenueBase, August 2026). RevenueBase tracks 1,684 professional contacts across them, including 393 with verified work emails and 95 with mobile numbers. Antwerpen is the largest hub.

This list covers outbound marketing agencies headquartered in Belgium, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

268Companies

1,684Contacts tracked

393Verified emails

95Mobile numbers

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The 25 largest outbound marketing agencies based in Belgium

Ranked by team size

Top 25 of 268 outbound marketing agencies based in Belgium, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Edison	Heverlee	n/a	273	1
2	Granton Marketing BV	Aartselaar	51-200	136	4
3	Omcollective	Sint-Niklaas	51-200	60	40
4	Agidrive	Louvain-La-Neuve	11-50	40	4
5	Kixx Strategy In Communication	Loppem	11-50	37	19
6	Atypic	Louvain La Neuve	11-50	29	12
7	Fightclub BE	Mechelen	11-50	25	1
8	Claerhout NV Communicatiehuis	Gent	11-50	24	2
9	AMI	Antwerpen	11-50	23	14
10	We ARE Digital	n/a	11-50	22	15
11	Synapse Agency	n/a	11-50	22	11
12	Remy Communication	Wijgmaal	11-50	21	12
13	Favorite	Zele	11-50	21	6
14	Idweaver	Waterloo	51-200	20	1
15	Artex Reclamebureau	Izegem	11-50	18	8
16	Phobos & Actor Marketing And Design	Geel	11-50	18	8
17	King George	Sint-Niklaas	11-50	17	10
18	The Bakery	n/a	11-50	17	7
19	RED Pepper	n/a	11-50	17	5
20	Blue2purple	Watermael-Boitsfort Brussels	11-50	17	4
21	OH Médias	n/a	11-50	16	8
22	Green Bananas Marketing	Aalst	11-50	15	5
23	Studio 27	Rijkevorsel	1-10	12	8
24	Idal- Elit Promo	Juprelle	51-200	12	1
25	AB	Waregem	11-50	11	3

Showing 25 of 268 outbound marketing agencies based in Belgium

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Outbound marketing agencies based in Belgium at a glance

As of Aug 28, 2026

1-10Median size (employees)

AntwerpenLargest hub · 13 HQs

95Contacts with mobile numbers

4Emails re-verified in last 30 days

Companies by employee count

1-10

209

11-50

51-200

Outbound marketing agencies by metro

Metro	Companies
Outbound marketing agencies in Antwerpen	13
Outbound marketing agencies in Bruxelles	9
Outbound marketing agencies in Brussels	9
Outbound marketing agencies in Genk	7
Outbound marketing agencies in Antwerp	7
Outbound marketing agencies in Kortrijk	5
Outbound marketing agencies in Ghent	4

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “outbound marketing agencies”, with match quality audited by blind human judging, and headquartered in Belgium.
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: Contact records re-verify on a rolling cadence; 4 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many outbound marketing agencies are there based in Belgium?

There are 268 outbound marketing agencies headquartered in Belgium as of August 2026 (RevenueBase).

What is the largest company on this list?

Edison, headquartered in Heverlee, tops this list with the largest team on record.

Which city has the most outbound marketing agencies?

Antwerpen leads with 13 headquartered companies, followed by Bruxelles (9) and Brussels (9).

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 393 verified decision-maker contacts tracked across these 268 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.