Company lists · Data refreshed September 2026

Top 25 Email template builders based in the United States

RevenueBase identified 94 email template builders headquartered in the United States as of September 2026 and tracks 1,594 professional contacts across them, including 556 with verified work emails. New York is the largest hub.

This list covers email template builders 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 19, 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 19, 2026 86% judged on-target in blind review
94Companies
1,594Contacts tracked
556Verified emails
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The 25 largest email template builders based in the United States

Ranked by team size
Top 25 of 94 email template builders based in the United States, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to email template builders: 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceMorrisville, NC, United StatesHQ checked Sep 19, 202651-200137 contacts →

Indirect evidence

“We believe powerful connections propel business growth.”

Source: RevenueBase Database · checked Sep 19, 2026
2Partial evidenceSan Francisco, CA, United StatesHQ checked Sep 19, 202651-200122 contacts →

Partial evidence

“In 2005, we started as a web design agency, but we soon discovered email marketing and fell in love with it.”

Source: RevenueBase Database · checked Sep 19, 2026
3Partial evidenceSt Louis, MO, United StatesHQ checked Sep 19, 202651-200115 contacts →

Partial evidence

“Benchmark helps busy marketers move faster and make a bigger impact with email.”

Source: RevenueBase Database · checked Sep 19, 2026
4Partial evidenceSan Francisco, CA, United StatesHQ checked Sep 19, 202651-20092 contacts →

Partial evidence

“The Beefree SDK is the #1 embeddable drag-and-drop editor for emails, landing pages, and popups.”

Source: RevenueBase Database · checked Sep 19, 2026
5Partial evidenceSan Francisco, CA, United StatesHQ checked Sep 19, 202611-5088 contacts →

Partial evidence

“Mailmodo is a complete email marketing solution enabling users to create and send app-like interactive emails to improve email conversions.”

Source: RevenueBase Database · checked Sep 19, 2026
6Indirect evidenceSan Francisco, CA, United StatesHQ checked Sep 19, 202651-20080 contacts →

Indirect evidence

“Flodesk makes simple, intuitive software tools to help entrepreneurs grow their businesses.”

Source: RevenueBase Database · checked Sep 19, 2026
7Partial evidenceNewark, DE, United StatesHQ checked Sep 19, 202651-20072 contacts →

Partial evidence

“Stripo is an online drag-n-drop and HTML email platform.”

Source: RevenueBase Database · checked Sep 19, 2026
8Indirect evidenceCambridge, MA, United StatesHQ checked Sep 19, 202651-20070 contacts →

Indirect evidence

“At Litmus, we know the importance of continuous innovation.”

Source: RevenueBase Database · checked Sep 19, 2026
9Partial evidenceBoise, ID, United StatesHQ checked Sep 19, 202651-20036 contacts →

Partial evidence

“Kit (formerly ConvertKit) helps serious creators like yourself craft epic emails, create powerful automations, and manage their audience all in a simple, intuitive platform.”

Source: RevenueBase Database · checked Sep 19, 2026
10Strong evidenceSan Francisco, United StatesHQ checked Sep 19, 202611-5033 contacts →

Strong evidence

“Empowering Teams to Build Better Content, Faster, Without Writing a Line of Code Unlayer is the embeddable content builder powering emails, landing pages, documents, and popups…”

Source: RevenueBase Database · checked Sep 19, 2026
11Strong evidenceSan Francisco, CA, United StatesHQ checked Sep 19, 202611-5026 contacts →

Strong evidence

“Empower your team to create, innovate, and grow with the Dyspatch Email Builder.”

Source: RevenueBase Database · checked Sep 19, 2026
12Partial evidenceCarmel, IN, United StatesHQ checked Sep 19, 202611-5025 contacts →

Partial evidence

“Delivra, a Redbrick company, is a sophisticated email platform that designs custom solutions to help marketers and agencies automate highly personalized, event-driven campaigns…”

Source: RevenueBase Database · checked Sep 19, 2026
13Partial evidencePinedale, WY, United StatesHQ checked Sep 19, 202611-5025 contacts →

Partial evidence

“GlockApps Software is a privately held company that offers multiple email marketing solutions to help businesses reach the inbox and solve email deliverability issues.”

Source: RevenueBase Database · checked Sep 19, 2026
14Partial evidenceCharlotte, NC, United StatesHQ checked Sep 19, 202611-5023 contacts →

Partial evidence

“Inbox Monster helps email teams send epic messages to every inbox.”

Source: RevenueBase Database · checked Sep 19, 2026
15Partial evidenceWilmington, DE, United StatesHQ checked Sep 19, 202611-5014 contacts →

Partial evidence

“At SendX, we’re passionate about making email marketing simple, affordable, and highly effective.”

Source: RevenueBase Database · checked Sep 19, 2026
16Partial evidenceSchneider, IN, United StatesHQ checked Sep 19, 202611-5013 contacts →

Partial evidence

“Smarter, high-volume email delivery software for tech leaders & marketers.”

Source: RevenueBase Database · checked Sep 19, 2026
17Partial evidenceSan Antonio, TX, United StatesHQ checked Sep 19, 2026201-50012 contacts →

Partial evidence

“Drive smart results with flexible APIs and intuitive tools to power your email communication.”

Source: RevenueBase Database · checked Sep 19, 2026
18Partial evidenceRancho Cordova, CA, United StatesHQ checked Sep 19, 20261-1012 contacts →

Partial evidence

“Founded in 2015, NiftyImages helps brands create personalized, dynamic, and interactive email experiences that drive engagement and conversions.”

Source: RevenueBase Database · checked Sep 19, 2026
19Partial evidenceAustin, TX, United StatesHQ checked Sep 19, 20261,001-5,00011 contacts →

Partial evidence

Email marketing software for media, publishing, and brand engagement.”

Source: RevenueBase Database · checked Sep 19, 2026
20Partial evidenceBeaverton, OR, United StatesHQ checked Sep 19, 20261-109 contacts →

Partial evidence

“Loops helps SaaS businesses send beautiful email newsletters, automated messages and one-off campaigns in a simple, easy to use interface.”

Source: RevenueBase Database · checked Sep 19, 2026
21Partial evidenceGreen Cove Springs, FL, United StatesHQ checked Sep 19, 202611-507 contacts →

Partial evidence

“IndustryNewsletters is a leading provider of email marketing tools delivering proven solutions that help professional service providers build new business.”

Source: RevenueBase Database · checked Sep 19, 2026
22Partial evidenceDedham, MA, United StatesHQ checked Sep 19, 20261-107 contacts →

Partial evidence

“ReachMail helps organizations of all kinds connect with audiences through email.”

Source: RevenueBase Database · checked Sep 19, 2026
23Strong evidenceSan Francisco, United StatesHQ checked Sep 19, 202611-506 contacts →

Strong evidence

“Elevate Your Email Campaigns Discover our Email Template Builder and transform your emails with Dark Mode, Gamification, Interactive Forms, and Quizzes, all while keeping your…”

Source: RevenueBase Database · checked Sep 19, 2026
24Indirect evidenceDover, DE, United StatesHQ checked Sep 19, 202611-505 contacts →

Indirect evidence

“Following are some of the features MassMailer provides for Salesforce CRM customers.”

Source: RevenueBase Database · checked Sep 19, 2026
25Partial evidenceNew York, NY, United StatesHQ checked Sep 19, 20261-105 contacts →

Partial evidence

“MailerSend is a powerful transactional email system built for developers but designed so non-tech teams can contribute without coding.”

Source: RevenueBase Database · checked Sep 19, 2026

Showing 25 of 94 email template builders based in the United States

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Email template builders based in the United States at a glance

As of Sep 19, 2026
34.9%Verified-email coverage
17.0Average contacts per company
11-50Median size (employees)
9.6%Largest-city concentration · New York
Sep 19, 2026Page data refreshed

Companies by employee count

1-10
38
11-50
36
51-200
13
201-500
4
1,001-5,000
3

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 94 companies.

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 email template builders, 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 “email template builders”. 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 email template builders), 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 email template builders, 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, 556 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 19, 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.

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 email template builders, 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 email template builders are there based in the United States?

RevenueBase identified 94 email template builders 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?

Icontact, headquartered in Morrisville, tops this list with the largest team on record.

Which city has the most email template builders?

New York leads with 9 headquartered companies, followed by San Francisco (9) and Austin (6).

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 556 verified decision-maker contacts tracked across these 94 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 19, 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.