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Top 5 Email Testing Software Companies With $1M–$5M Revenue (August 2026)

As of August 2026, Latka tracks 5 email testing software companies with $1M–$5M in annual revenue. They have combined revenues of $11.6M and employ 110 people. They have raised $11M and serve 300 customers combined.

Every company below sells email testing software to other businesses and is ranked by its most recent annual revenue. Revenue, funding, headcount and customer figures come from CEO interviews on the Latka podcast, public company filings, and Latka estimates where a company has not disclosed a number.

What Email Testing Software Companies do

Email Testing Software helps organizations verify the functionality, accuracy, and reliability of their email communications before executing campaigns. This category of software is crucial for ensuring that emails render correctly across various clients and devices, and that they pass through spam filters to reach recipients' inboxes. Users commonly adopt these tools to conduct pre-send testing, A/B testing, and analyze deliverability metrics to improve email marketing strategies. Typical features of email testing software include previewing email displays on different devices and clients, spam filter testing, validation of links and images, and analysis of email content for compliance with best practices. Buyer personas often include marketing professionals, content creators, and IT specialists responsible for maintaining email channel integrity. The primary use case is to enhance the overall effectiveness of email campaigns by identifying potential issues before the emails are dispatched.

Companies
5
Revenue
$11.6M
Funding
$11M
Employees
110

Filters

Sorting: Highest -> Lowest

Filters
Revenue
All<$1M$1M-$5M$5M-$10M$10M-$100M$100M+
Funding (Locked)Growth (Locked)Team-Size (Locked)

Top Email Testing Software Companies With $1M–$5M Revenue

Showing 5 of 5 companies ranked by annual revenue.

1L-Soft logo
L-Soft

Bethesda, Maryland, United States

Engage your audiences and boost your organization’s impact with email newsletters, discussion groups and opt-in email marketing campaigns. Do it all with the highest level of subscriber permission and best practices, plus new tools to help with EU GDPR data privacy requirements. Get in touch—we’re here to help you make a difference with email. Celebrating 35 years of powering people and communications, L-Soft is your source for #LISTSERV®, the original email list management solution, invented by the company’s founder and CEO Eric Thomas. Since 1986, 3,700+ business, government, educational, and non-profit organizations worldwide have trusted LISTSERV because it’s reliable, flexible and gets results.

Revenue
$3.3M
Year founded
1994
Team size
30
2Scalero logo
Scalero

San Francisco, California, United States

Email marketing studio, helping companies get more out of email through software and services.

Revenue
$3M
Year founded
2019
Team size
27
3Dyspatch logo
Dyspatch

San Francisco, California, United States

Two products to help everyone email better.

Revenue
$2.5M
Customers
200
Year founded
2014
Funding
$11M
Team size
22
4Folderly logo
Folderly

Dover, Delaware, United States

Email Deliverability Platform

Revenue
$1.6M
Customers
100
Year founded
2019
Team size
30
5Milled logo
Milled

New York, New York, United States

The search engine for ecommerce emails

Revenue
$1.2M
Year founded
2012
Team size
1

Frequently asked questions about Email Testing Software Companies With $1M–$5M Revenue

How many email testing software companies with $1M–$5M in annual revenue are there?

Latka tracks 5 email testing software companies with $1M–$5M in annual revenue. Together they generate $11.6M in annual revenue and employ 110 people.

Which email testing software company with $1M–$5M in annual revenue is the largest?

L-Soft is the largest, with $3.3M in annual revenue, founded in 1994.

How much revenue does a typical email testing software company with $1M–$5M in annual revenue make?

The average email testing software company in this list makes $2.3M a year, across 5 companies with reported revenue. They serve 300 customers combined.

Who are the leading Email Testing software vendors with $1M–$5M in annual revenue?

Ranked by annual revenue, the leaders are L-Soft, Scalero, Dyspatch, Folderly and Milled.

How much funding have email testing software companies with $1M–$5M in annual revenue raised?

The 5 email testing software companies with $1M–$5M in annual revenue tracked here have raised $11M in disclosed funding between them.

Related Marketing Software categories

All Marketing Software SaaS categoriesEvery category we track inside Marketing Software, each ranked by revenue.Browse every SaaS industryThe full A-Z of SaaS categories Latka tracks, from Email Testing to everything else.

Inclusion Criteria

- Must provide functionality for simulating and analyzing email campaigns - Should include tools for A/B testing and multi-device previews - Must offer spam filter and deliverability testing capabilities - Should validate email content for compliance with industry standards - Must not only focus on email marketing automation; must also enable comprehensive testing and analytics