Company lists · Data refreshed September 2026

Top 25 Inbound marketing agencies for B2B based in the United States

Name: Inbound marketing agencies for B2B based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 13, 2026 5,631 companies tracked

RevenueBase identified 5,631 inbound marketing agencies for B2B headquartered in the United States as of September 2026 and tracks 58,991 professional contacts across them, including 15,782 with verified work emails and 14,195 with mobile numbers. New York is the largest hub.

This list covers inbound marketing agencies for B2B headquartered in the United States, 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 13, 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 13, 2026 86% judged on-target in blind review

5,631Companies

58,991Contacts tracked

15,782Verified emails

14,195Mobile numbers

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The 25 largest inbound marketing agencies for B2B based in the United States

Ranked by team size

Top 25 of 5,631 inbound marketing agencies for B2B based in the United States, ranked by team size, largest first. Data refreshed Sep 13, 2026. RevenueBase Smart Search rates how each company's information relates to inbound marketing agencies for B2B: 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	Demandscience	Indirect evidence	Boston, United StatesHQ checked Sep 13, 2026	1,001-5,000	1,087 contacts →
	Indirect evidence “With proprietary data and omni-channel activation like events, content, programmatic and chat, we cut through the noise to reach entire buyer groups, driving engagement and impact…” Source: RevenueBase Database · checked Sep 13, 2026
2	2x	Strong evidence	Malvern, PA, United StatesHQ checked Sep 13, 2026	1,001-5,000	1,046 contacts →
	Strong evidence “2X is the global leader in B2B marketing-as-a-service (MaaS), a subscription-based alternative to traditional B2B marketing delivery models.” Source: RevenueBase Database · checked Sep 13, 2026
3	Ziff Davis Performance Marketing	Indirect evidence	Austin, TX, United StatesHQ checked Sep 13, 2026	1,001-5,000	821 contacts →
	Indirect evidence “ZDPM is the coming together of Salesify and DemandShore.” Source: RevenueBase Database · checked Sep 13, 2026
4	S2w Media	Indirect evidence	New York, NY, United StatesHQ checked Sep 13, 2026	501-1,000	806 contacts →
	Indirect evidence “We are innovators, problem solvers, thought leaders, and above all else, a team.” Source: RevenueBase Database · checked Sep 13, 2026
5	Infuse	Strong evidence	Boca Raton, FL, United StatesHQ checked Sep 13, 2026	1,001-5,000	796 contacts →
	Strong evidence “Demand Excellence Delivered We are INFUSE, a global B2B demand and revenue marketing performance company.” Source: RevenueBase Database · checked Sep 13, 2026
6	Anteriad	Indirect evidence	New York, NY, United StatesHQ checked Sep 13, 2026	501-1,000	740 contacts →
	Indirect evidence “Data Driven.” Source: RevenueBase Database · checked Sep 13, 2026
7	Abstrakt Marketing Group	Partial evidence	St Louis, MO, United StatesHQ checked Sep 13, 2026	501-1,000	724 contacts →
	Partial evidence “We book the qualified meetings that fill your pipeline for any B2B company ready to grow.” Source: RevenueBase Database · checked Sep 13, 2026
8	Salebuild	Partial evidence	Redwood City, CA, United StatesHQ checked Sep 13, 2026	n/a	708 contacts →
	Partial evidence “Salesify, a leading provider of B2B demand generation services, helps our clients create pipeline and accelerate revenue by identifying, profiling, nurturing and connecting with…” Source: RevenueBase Database · checked Sep 13, 2026
9	Flexisales INC	Partial evidence	Las Vegas, NV, United StatesHQ checked Sep 13, 2026	201-500	697 contacts →
	Partial evidence “Flexisales, is a global frontrunner in B2B Lead & Demand Generation and Data Services, serving technology companies & agencies worldwide.” Source: RevenueBase Database · checked Sep 13, 2026
10	Multiview	Strong evidence	Irving, TX, United StatesHQ checked Sep 13, 2026	501-1,000	616 contacts →
	Strong evidence “Multiview is a B2B digital marketing agency helping associations and businesses reach, engage and grow their most valued relationships.” Source: RevenueBase Database · checked Sep 13, 2026
11	CMD	Indirect evidence	Portland, OR, United StatesHQ checked Sep 13, 2026	n/a	604 contacts →
	Indirect evidence “Take command of every opportunity with a partner that gets results.” Source: RevenueBase Database · checked Sep 13, 2026
12	Digitalzone	Partial evidence	New York, NY, United StatesHQ checked Sep 13, 2026	501-1,000	558 contacts →
	Partial evidence “Digitalzone is a global marketing and demand gen company dedicated to delivering compliant leads, exceptional customer satisfaction, and an end-to-end approach.” Source: RevenueBase Database · checked Sep 13, 2026
13	SGT	Partial evidence	Houston, TX, United StatesHQ checked Sep 13, 2026	201-500	557 contacts →
	Partial evidence “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.” Source: RevenueBase Database · checked Sep 13, 2026
14	Movingdneedle Pvt. LTD	Partial evidence	Sterling Heights, MI, United StatesHQ checked Sep 13, 2026	51-200	528 contacts →
	Partial evidence “movingDneedle is a Business to Business Sales Lead Generation Company that provides fast and scalable, sales qualified leads through its unique Personalized Email Marketing…” Source: RevenueBase Database · checked Sep 13, 2026
15	Callbox INC	Indirect evidence	Encino, CA, United StatesHQ checked Sep 13, 2026	201-500	499 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 13, 2026
16	Demandshore	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 13, 2026	501-1,000	478 contacts →
	Strong evidence “About DemandShore Since 2004, we’ve been working hard to deliver value to Sales & Marketing professionals across B2B Technology companies globally.” Source: RevenueBase Database · checked Sep 13, 2026
17	Saleshive	Indirect evidence	Denver, CO, United StatesHQ checked Sep 13, 2026	51-200	455 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 13, 2026
18	Marketone International	Indirect evidence	Waltham, MA, United StatesHQ checked Sep 13, 2026	201-500	431 contacts →
	Indirect evidence “MarketOne is a global demand generation agency.” Source: RevenueBase Database · checked Sep 13, 2026
19	Amarketforce	Partial evidence	San Jose, CA, United StatesHQ checked Sep 13, 2026	201-500	391 contacts →
	Partial evidence “aMarketForce is a full-scale B2B Contact Database & Demand Generation services company.” Source: RevenueBase Database · checked Sep 13, 2026
20	Acceligize	Strong evidence	Houston, TX, United StatesHQ checked Sep 13, 2026	201-500	349 contacts →
	Strong evidence “Acceligize is a global B2B marketing company, providing full funnel lead generation and content marketing solutions to some of the world’s finest technology companies, media…” Source: RevenueBase Database · checked Sep 13, 2026
21	FUNNL	Partial evidence	Philadelphia, United StatesHQ checked Sep 13, 2026	201-500	349 contacts →
	Partial evidence “FunnL was built on a revolutionary idea: B2B companies don’t need more leads-they need more qualified sales meetings with decision-makers.” Source: RevenueBase Database · checked Sep 13, 2026
22	Madison Logic	Indirect evidence	New York, NY, United StatesHQ checked Sep 13, 2026	201-500	334 contacts →
	Indirect evidence “Since 2005, Madison Logic has empowered the largest and fastest-growing companies to convert their best accounts faster.” Source: RevenueBase Database · checked Sep 13, 2026
23	Marketbridge	Partial evidence	Bethesda, MD, United StatesHQ checked Sep 13, 2026	201-500	319 contacts →
	Partial evidence “Marketbridge partners with B2B leaders to create unified Go-to-Market® systems by connecting strategy, AI, creativity, activation and measurement.” Source: RevenueBase Database · checked Sep 13, 2026
24	Vereigen Media	Partial evidence	Austin, TX, United StatesHQ checked Sep 13, 2026	201-500	309 contacts →
	Partial evidence “Vereigen Media is a U.S-based B2B demand generation company that supports organizations connect with data-driven lead generation and audience engagement solutions.” Source: RevenueBase Database · checked Sep 13, 2026
25	Integrate	Partial evidence	Phoenix, AZ, United StatesHQ checked Sep 13, 2026	51-200	301 contacts →
	Partial evidence “Enabling B2B Marketers Connect data across demand channels Govern data + ensure integrity Analyze impact + inform next best investments” Source: RevenueBase Database · checked Sep 13, 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: inbound marketing agencies for B2B. 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 inbound marketing agencies for B2B.
Partial evidence: Its own public description names part of inbound marketing agencies for B2B, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name inbound marketing agencies for B2B. 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 5,631 inbound marketing agencies for B2B based in the United States

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Inbound marketing agencies for B2B based in the United States at a glance

As of Sep 13, 2026

26.8%Verified-email coverage

24.1%Mobile-number coverage

10.5Average contacts per company

1-10Median size (employees)

3.8%Largest-city concentration · New York

Sep 13, 2026Page data refreshed

Companies by employee count

1-10

3,780

11-50

1,434

51-200

320

201-500

501-1,000

1,001-5,000

10001+

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 16.0d

12,0390–30

3,53431–60

5961–90

1790–180

133180+

Company record updated

Median 76.0d

00–30

23,16631–60

26,22261–90

6,63990–180

2,964180+

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 inbound marketing agencies for B2B, 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 the United States whose own description of what they do matches “inbound marketing agencies for B2B”. 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 inbound marketing agencies for B2B), 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 inbound marketing agencies for B2B, and records with no verified work email. Companies headquartered outside United States 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, 15,782 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 13, 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.

Inbound marketing agencies for B2B 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 inbound marketing agencies for B2B, 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 inbound marketing agencies for B2B are there based in the United States?

RevenueBase identified 5,631 inbound marketing agencies for B2B headquartered in the United States 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?

Demandscience, headquartered in Boston, tops this list with the largest team on record.

Which city has the most inbound marketing agencies for B2B?

New York leads with 213 headquartered companies, followed by Austin (121) and Los Angeles (121).

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 15,782 verified decision-maker contacts tracked across these 5,631 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 13, 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.