Company lists · Data verified August 2026

Top 25 Email marketing companies based in the United Kingdom

Name: Email marketing companies based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 398 companies tracked

There are 398 email marketing companies headquartered in the United Kingdom (RevenueBase, August 2026). RevenueBase tracks 10,576 professional contacts across them, including 789 with verified work emails and 1,856 with mobile numbers. London is the largest hub.

This list covers email marketing companies headquartered in the United Kingdom, 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.

398Companies

10,576Contacts tracked

789Verified emails

1,856Mobile numbers

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The 25 largest email marketing companies based in the United Kingdom

Ranked by team size

Top 25 of 398 email marketing companies based in the United Kingdom, 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	Omnisend	Global	201-500	270	141
2	Act-On Software	Reading	201-500	209	66
3	Emailclub	London	51-200	103	39
4	Underground Ecom	London	51-200	103	21
5	Spotler UK	Guildford	51-200	84	18
6	Exacttarget	London	1,001-5,000	83	47
7	1973 LTD	Chalgrove	11-50	72	5
8	Netmera	n/a	51-200	57	35
9	INC Direct	London	51-200	36	1
10	Stoneshot	London	51-200	35	20
11	Moosend	London	11-50	32	17
12	Mailercloud	London	11-50	30	12
13	Data HQ LTD	Chelmsford	11-50	27	14
14	Impact Marketing	Essex	11-50	23	1
15	Auraseed	Brighton	11-50	18	10
16	Gecko Direct LTD	Leeds	51-200	18	4
17	Open House Media	London	11-50	16	8
18	Campaigner	North Shields	51-200	16	6
19	Selectabase LTD	Whitfield	11-50	15	7
20	Merrehill	Macclesfield	11-50	13	9
21	Jarrang	London	11-50	13	6
22	Callent Tech LTD	London	51-200	12	2
23	Postman	London	11-50	11	6
24	Evernue Media	Uk	11-50	11	4
25	Silk Email	Lostwithiel	11-50	11	3

Showing 25 of 398 email marketing companies based in the United Kingdom

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Email marketing companies based in the United Kingdom at a glance

As of Aug 28, 2026

1-10Median size (employees)

LondonLargest hub · 160 HQs

1,856Contacts with mobile numbers

0Emails re-verified in last 30 days

Companies by employee count

1-10

292

11-50

51-200

201-500

1,001-5,000

Email marketing companies by metro

Metro	Companies
Email marketing companies in London	160
Email marketing companies in Manchester	14
Email marketing companies in Brighton	7
Email marketing companies in Birmingham	5
Email marketing companies in Exeter	4
Email marketing companies in Poole	4
Email marketing companies in Bristol	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 “email marketing companies”, with match quality audited by blind human judging, and headquartered in the United Kingdom.
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; 0 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 email marketing companies are there based in the United Kingdom?

There are 398 email marketing companies headquartered in the United Kingdom as of August 2026 (RevenueBase).

What is the largest company on this list?

Omnisend, headquartered in Global, tops this list with the largest team on record.

Which city has the most email marketing companies?

London leads with 160 headquartered companies, followed by Manchester (14) and Brighton (7).

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 789 verified decision-maker contacts tracked across these 398 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.