Company lists · Data refreshed September 2026
Top 25 Newsletter marketing agencies worldwide
RevenueBase identified 2,133 newsletter marketing agencies worldwide as of September 2026 and tracks 16,159 professional contacts across them, including 1,816 with verified work emails. The United States is the largest market and London the largest hub.
This list covers newsletter marketing agencies worldwide, 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 29, 2026. Country and city lists for newsletter marketing agencies follow the table.
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.
The 25 largest newsletter marketing agencies worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 112 contacts → | ||||
Partial evidence “A global Email Marketing Agency to help supercharge #ecommerce revenues with highly specialised #EmailMarketing services Hit us up for a Free Marketing Audit” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 102 contacts → | ||||
Partial evidence “Underground Ecom is a rapidly growing Email marketing agency specialising in helping ecommerce businesses reach their full potential through retention marketing.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 95 contacts → | ||||
Partial evidence “We are not a normal marketing agency.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 91 contacts → | ||||
Indirect evidence “At EmailClub, we are building the strongest CRM team on the market.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 79 contacts → | ||||
Partial evidence “Site Impact is your trusted, turnkey partner that empowers agencies with one of the country's largest, data-driven, multichannel marketing solutions.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 6 | 72 contacts → | ||||
Partial evidence “Founded in 2004, 1973 Ltd is an experienced, proven marketing agency who specialise in email and automation.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 71 contacts → | ||||
Indirect evidence “WE ARE MARRINA One of the most time-consuming yet highly-valuable aspects of the marketer’s role is Email Production.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 69 contacts → | ||||
Indirect evidence “Whether you are an experienced Internet marketer looking for new ways to reach your audience, a direct marketer exploring how the Internet can be a profitable source of leads or…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 55 contacts → | ||||
Indirect evidence “Starożytna japońska legenda głosi, że każdy, kto złoży żurawi z papieru zostanie obdarzony wiecznym sukcesem i szczęściem.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 51 contacts → | ||||
Indirect evidence “Premier Email & SMS Retention Partners for Ecommerce Brands We handle everything that has to do with email.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 49 contacts → | ||||
Indirect evidence “MonsterClaw started as a one-man show back in 2007 and now we’re a team of 40+ super dedicated & passionate in-house digital marketers backed up by a large remote team from around…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 49 contacts → | ||||
Partial evidence “InboxArmy is an elite, full-service email marketing agency offering the full spectrum of email marketing services, including- Full-Service Campaign Management - Email Template…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 47 contacts → | ||||
Indirect evidence “Emailmovers are expert B2B email marketers, helping businesses unlock the full potential of email through targeted, high-performing campaigns.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 47 contacts → | ||||
Partial evidence “Letterhead is the Newsletter Execution System built for teams that want to do more with email.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 46 contacts → | ||||
Partial evidence “DIGITAL RESPONSE is a full-service agency specializing in eCRM, Email and Marketing Automation.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 42 contacts → | ||||
Partial evidence “iDrive Interactive is a privately-held performance based online marketing firm.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 39 contacts → | ||||
Indirect evidence “Consistency conquers.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 36 contacts → | ||||
Indirect evidence “Let us prove to you that direct mail isn’t dead.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 34 contacts → | ||||
Partial evidence “rapidmail ist die einfach gute Newsletter-Software „made in Germany” Als Teil des digitalen Ökosystems von Positive lassen sich mit Positive rapidmail mit nur wenigen Klicks…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 33 contacts → | ||||
Partial evidence “CodeCrew is an Email Marketing agency founded in 2018 with one goal: to turn your customer relationships into reliable revenue engines.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 30 contacts → | ||||
Indirect evidence “Since 2013, mailercloud has expanded to become one of the largest and most extensive cloud-based email services, that resolves the task of reliably delivering emails on behalf of…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 30 contacts → | ||||
Indirect evidence “Bij OMG verzorgen wij e-maildriven conversies.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 29 contacts → | ||||
Partial evidence “KlickTipp offers innovative email marketing and marketing automation services and it is the first learning email marketing solution with unique tagging system.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 28 contacts → | ||||
Partial evidence “Email marketing made easy.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 25 | 28 contacts → | ||||
Partial evidence “SMTP Mailer Provides best email marketing services, we are in first position in reputed email marketing company across the world.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
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: newsletter marketing agencies. 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 newsletter marketing agencies.
- Partial evidence
- Its own public description names part of newsletter marketing agencies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name newsletter marketing agencies. 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 2,133 newsletter marketing agencies worldwide
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 1,816 reachable decision-makers.
Free signup · no credit card
Newsletter marketing agencies worldwide at a glance
As of Sep 29, 2026Companies by employee count
Email recency is reported on each country list linked below.
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 newsletter marketing agencies, 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.
- Coverage
- Every country. Country and city lists for newsletter marketing agencies are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “newsletter marketing agencies”. 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 newsletter marketing agencies), 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 newsletter marketing agencies, and records with no verified work email.
- 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, 1,816 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 29, 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.
Newsletter marketing agencies by location
10 lists · largest firstEvery Newsletter marketing agencies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Newsletter marketing agencies based in the United States550
- Newsletter marketing agencies based in the United Kingdom170
- Newsletter marketing agencies based in India89
- Newsletter marketing agencies based in Canada64
- Newsletter marketing agencies based in Germany60
- Newsletter marketing agencies based in France55
- Newsletter marketing agencies based in the Netherlands53
- Newsletter marketing agencies based in Australia50
Cities
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 newsletter marketing agencies, 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 newsletter marketing agencies are there worldwide?
RevenueBase identified 2,133 newsletter marketing agencies worldwide 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?
Hustler Marketing, headquartered in Barcelona, tops this list with the largest team on record.
Which country has the most newsletter marketing agencies?
The United States leads with 550 companies, followed by the United Kingdom (170) and India (89). Every newsletter marketing agencies list by country and city is linked on this page.
Which city has the most newsletter marketing agencies?
London leads with 80 headquartered companies, followed by New York (38) and Paris (28).
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 1,816 verified decision-maker contacts tracked across these 2,133 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 29, 2026.
Ready to reach these companies? Verified emails and direct dials for all 2,133 newsletter marketing agencies worldwide. Start with a free account, no credit card.
Download this list →Related lists
Browse the directory
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.