Company lists · Data refreshed September 2026

Top 25 Outsourcing B2B marketing services worldwide

Name: Outsourcing B2B marketing services worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 20,516 companies tracked

RevenueBase identified 20,516 company matches for outsourcing B2B marketing services worldwide as of September 2026 and tracks 194,271 professional contacts across them, including 28,232 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for outsourcing B2B marketing services worldwide, 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 21, 2026. Country and city lists for outsourcing B2B marketing services follow the table.

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 21, 2026 How this list was built

20,516Companies

194,271Contacts tracked

28,232Verified emails

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The 25 largest outsourcing B2B marketing services worldwide

Ranked by team size

Top 25 of 20,516 company matches for outsourcing B2B marketing services worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 21, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Selbstständig	Exact match	Zurich, SwitzerlandHQ recorded Sep 21, 2026	n/a	15,466 contacts →
	Exact match “Bei Social Group positionieren wir deine Marke, treiben die Bekanntheit voran und generieren Leads und Umsätze durch qualitativ hochwertige Inhalte.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
2	Xdbs Worldwide	Exact match	Dubai, United Arab EmiratesHQ recorded Sep 21, 2026	1,001-5,000	3,498 contacts →
	Exact match “At XDBS, we primarily work with media agencies, publishers and marketing companies looking to leverage marketing automation and digital marketing capacity and capability to…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
3	Marketstar	Exact match	Ogden, UT, United StatesHQ recorded Sep 21, 2026	1,001-5,000	2,446 contacts →
	Exact match “MarketStar is a global B2B sales outsourcing leader with 38+ years of experience driving predictable revenue growth.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
4	Webhelp Enterprise	Exact match	Paris, FranceHQ recorded Sep 21, 2026	10001+	1,795 contacts →
	Exact match “The Concentrix B2B sales practice is here to design, build and run projects for our clients.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
5	SEBPO	Exact match	Marlton, NJ, United StatesHQ recorded Sep 21, 2026	1,001-5,000	1,237 contacts →
	Exact match “SEBPO transforms operational complexity into a seamless, strategic advantage.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
6	2x	Exact match	Malvern, PA, United StatesHQ recorded Sep 21, 2026	1,001-5,000	1,046 contacts →
	Exact match “2X is the global leader in B2B marketing-as-a-service (MaaS), a subscription-based alternative to traditional B2B marketing delivery models.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
7	Machbizz Marketers PVT LTD	Exact match	Pune, IndiaHQ recorded Sep 21, 2026	501-1,000	967 contacts →
	Exact match “MachBizz is a mission itself with a strong urge to accomplish its vision of B2B Digital Marketing and lead generation.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
8	Adecco Outsourcing	Exact match	Paris, FranceHQ recorded Sep 21, 2026	501-1,000	887 contacts →
	Exact match “Adecco Outsourcing propose aux entreprises des solutions d’externalisation dédiées à l’Accueil en entreprise, à l’Evènementiel, au Marketing terrain et aux activités de production…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
9	Ziff Davis Performance Marketing	Exact match	Austin, TX, United StatesHQ recorded Sep 21, 2026	1,001-5,000	821 contacts →
	Exact match “ZDPM is the coming together of Salesify and DemandShore.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
10	S2w Media	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	501-1,000	806 contacts →
	Exact match “We are innovators, problem solvers, thought leaders, and above all else, a team.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
11	ZAZ Vendas	Exact match	Campinas, BrazilHQ recorded Sep 21, 2026	501-1,000	796 contacts →
	Exact match “Em um mercado cada vez mais competitivo, onde a eficiência em vendas massificadas e externas é um desafio constante, a ZAZ Vendas surge como a resposta definitiva.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
12	Innerworkings	Exact match	London, United KingdomHQ recorded Sep 21, 2026	1,001-5,000	757 contacts →
	Exact match “Founded in 1991, HH Global is a global outsourced marketing execution provider.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
13	Manlitics B2B Ites	Exact match	New York, United StatesHQ recorded Sep 21, 2026	501-1,000	750 contacts →
	Exact match “In an ERA of new and emerging digital mediums, we align our core expertise of today’s ever-changing technology with a clear understanding of traditional marketing methods without…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
14	Anteriad	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	501-1,000	740 contacts →
	Exact match “Data Driven.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
15	Abstrakt Marketing Group	Exact match	St Louis, MO, United StatesHQ recorded Sep 21, 2026	501-1,000	724 contacts →
	Exact match “We book the qualified meetings that fill your pipeline for any B2B company ready to grow.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
16	Salebuild	Exact match	Redwood City, CA, United StatesHQ recorded Sep 21, 2026	n/a	708 contacts →
	Exact match “Salesify, a leading provider of B2B demand generation services, helps our clients create pipeline and accelerate revenue by identifying, profiling, nurturing and connecting with…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
17	Flexisales INC	Exact match	Las Vegas, NV, United StatesHQ recorded Sep 21, 2026	201-500	697 contacts →
	Exact match “Flexisales, is a global frontrunner in B2B Lead & Demand Generation and Data Services, serving technology companies & agencies worldwide.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
18	Kestone	Exact match	Mohan Cooperative Industrial, United Arab EmiratesHQ recorded Sep 21, 2026	201-500	638 contacts →
	Exact match “We’re a 28 years old B2B marketing agency.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
19	Digital WEB Solutions	Exact match	United StatesHQ recorded Sep 21, 2026	501-1,000	623 contacts →
	Exact match “Digital Web Solutions is a global name in the digital marketing space.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
20	Multiview	Exact match	Irving, TX, United StatesHQ recorded Sep 21, 2026	501-1,000	616 contacts →
	Exact match “Multiview is a B2B digital marketing agency helping associations and businesses reach, engage and grow their most valued relationships.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
21	SGT	Exact match	Houston, TX, United StatesHQ recorded Sep 21, 2026	201-500	557 contacts →
	Exact match “After almost 2 years driving internal demand at one of Omnicom's lead Marketing strategy agencies I have returned to Lead to Market to lead our applied marketing practice.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
22	Telenet Marketing Solutions	Exact match	Athens, GA, IndiaHQ recorded Sep 21, 2026	201-500	553 contacts →
	Exact match “From initial market awareness to the final stages of a complex B2B buying journey, modern buyers crave authentic interaction.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
23	LINK	Exact match	Hong Kong, United KingdomHQ recorded Sep 21, 2026	201-500	541 contacts →
	Exact match “We are Link: your positive change partner.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
24	Movingdneedle Pvt. LTD	Exact match	Sterling Heights, MI, United StatesHQ recorded Sep 21, 2026	51-200	528 contacts →
	Exact match “movingDneedle is a Business to Business Sales Lead Generation Company that provides fast and scalable, sales qualified leads through its unique Personalized Email Marketing…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
25	Callbox INC	Exact match	Encino, CA, United StatesHQ recorded Sep 21, 2026	201-500	499 contacts →
	Exact match “Callbox is the #1 trusted lead generation services and AI-Powered Growth Strategy Partner by enterprise and scaling businesses in the USA, Canada, Asia Pacific, Latin America…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “outsourcing B2B marketing services”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 20,516 outsourcing B2B marketing services worldwide

See the full list, filter by size, metro and specialty, and access 28,232 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Outsourcing B2B marketing services worldwide at a glance

As of Sep 21, 2026

14.5%Verified-email coverage

9.5Average contacts per company

1-10Median size (employees)

2.5%Largest-city concentration · London

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

13,112

11-50

5,444

51-200

1,465

201-500

335

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

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.
Coverage: Every country. Country and city lists for outsourcing B2B marketing services are linked below.
What qualifies: Company records worldwide whose business descriptions match “outsourcing B2B marketing services” 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. 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 28,232 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 21, 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.

Outsourcing B2B marketing services by location

83 lists · largest first

Every Outsourcing B2B marketing services list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 “outsourcing B2B marketing services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many outsourcing B2B marketing services are there worldwide?

RevenueBase identified 20,516 company matches for outsourcing B2B marketing services worldwide 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?

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

Which country has the most outsourcing B2B marketing services?

The United States leads with 4,814 companies, followed by India (2,072) and the United Kingdom (1,743). Every outsourcing B2B marketing services list by country and city is linked on this page.

Which city has the most outsourcing B2B marketing services?

London leads with 514 company records, followed by Pune (473) and New York (225).

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 28,232 professional contacts with verified work emails tracked across these 20,516 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 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 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.