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.
Sorting: Highest -> Lowest
Showing 10 of 7 companies ranked by annual revenue.
United States
We're a small group of developers, interface designers, and engineers that craft exceptional user experiences. We work on projects of our own and help clients large and small create software that their customers love. We're incurable builders and perpetual brainstormers with a passion for software.
Kaiserslautern, Rheinland-Pfalz, Germany
EGroupware is an enterprise ready collaboration software for your network. It enables you to manage email, contacts, appointments, tasks and much more for your whole business. EGroupware is a groupware server. It comes with a native web-interface which allows to access data from any platform all over the planet. Moreover you also have the choice to access the EGroupware server with your favorite groupware client and with your mobile device. EGroupware is international. At the time, it supports more than 25 languages. The software runs preferably on Linux. On the client side, all you need is a recommended internet browser such as Chrome or Firefox.
St. Petersburg, Florida, United States
Mimestream is building the next generation of email and communication tools. Our first product is a native macOS email client for Gmail – try it free at https://mimestream.com!
Philadelphia, Pennsylvania, United States
Dabble Ventures is a venture studio located in Philadelphia PA that searches for gaps in markets that venture capitalists won’t touch and builds sustainable profitable businesses within them. To some, we’re a safe haven to sell their profitable business and to others we help build their business idea from the ground up.
San Francisco, California, United States
Canary learns how you email. It can write your emails, surface what needs attention, silence spam, and much more. Say hello to your AI Email Copilot.
Bristol, England, United Kingdom
Developer of a cloud-based business email management platform designed to allow teams to share ideas, tasks and updates. The company's business email management platform offers collaboration tools such as email organization, business chats, news-feeds, messenger, task and project management, productivity applications as well as document and file sharing applications, enabling teams to collaborate instantly from any location and from any device.
Cheltenham, Gloucestershire, United Kingdom
Hexamail provides intelligent email software solutions. Leveraging the latest advanced techniques, such as Bayesian matching, our products enable customers to eliminate email intrusions such as spam, malware, spyware, phishing attacks and virus. Our unique technology architecture combined with highly scalable and reliable core engines ensure that our products provide hardened, bullet-proof security and performance that surpasses even the largest scale email deployment demands.
- Must allow users to send and receive emails from one or multiple accounts - Should provide organization features such as folders, tags, or categories for managing emails - Must support integrations with calendar and contact management tools - Needs to offer enhanced security features, such as encryption and spam filtering - Not just for sending and receiving emails; must also provide tools for email management and organization - Should include a user-friendly interface for ease of use across different devices.
Each Tuesday, we reverse-engineer a real SaaS company's revenue, profit, CAC, funnels, and its top growth tactic.
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