Top 31 Email Client Software SaaS Companies in May 2026

As of May 2026, there are 31 SaaS companies in Email Client Software. They have combined revenues of $1.1B and employ 5.2K people. They have raised $314.1M and serve 153K customers combined.

Email client software enables users to access, manage, and send emails effectively. This software can function as a standalone application installed on a desktop or mobile device, or as a web-based service, offering flexibility based on user preferences. Common use cases include personal communication, business correspondence, and team collaboration, where users need organized access to multiple email accounts in one place. Typical features of email client software include the ability to send and receive emails, manage contacts, schedule calendar events, and organize messages through folders or tags. Additional functionalities may encompass spam filtering, email encryption, and integration with other productivity tools. The primary users of such software range from individual consumers to business professionals in roles such as administration, sales, marketing, and IT who require robust email management and communication capabilities.