As of May 2026, there are 21 SaaS companies in Email Testing Software. They have combined revenues of $81.4M and employ 561 people. They have raised $11.1M and serve 1.2M customers combined.
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.
Sorting: Highest -> Lowest
Showing 10 of 21 companies ranked by annual revenue.
San Francisco, California, United States
Design emails people love to open. Founded in 2019, Flodesk reported $10 million in revenue in 2021. After remaining steady in 2022, the company experienced significant growth, reaching $27 million in revenue by 2024, marking a 35% year-over-year increase.
San Francisco, California, United States
Good Sales Emails is a website that provides resources and examples of effective sales emails from various companies. It offers insights and tips on crafting successful sales emails.
Santa Barbara, California, United States
Our Email Validation Service quickly and accurately removes invalid, disposable, spam traps, abusive and other harmful email addresses. 98% Accuracy Guaranteed. Try our Free Trial now!
Wroclaw, Lower Silesian District, Poland
Bouncer is a company that provides powerful and affordable email list verification and email validation. Simple App and easy-to-integrate API. 99.99% availability. GDPR compliant by design! We protect our customers from bounced back emails and by that: - secure their reputation as a sender, - ensure continuity of the communication with their customers and partners, - minimize the cost related to an outdated database of contacts, - maximize reach to their customers and partners. Check our website for more details.
Pinedale, Wyoming, United States
GlockApps Software is a privately held company that offers multiple email marketing solutions to help businesses reach the inbox and solve email deliverability issues. We designed our tools to make it simple for every marketer to test their email placement across global providers, control email authentication, and solve deliverability issues before sending. Our team of email marketing experts also offers consulting and comprehensive deliverability audits with personalized recommendations to help you increase your revenue from email marketing.
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.
San Francisco, California, United States
Email marketing studio, helping companies get more out of email through software and services.
- 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
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