Top 21 Email Testing Software SaaS Companies in May 2026

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.