Accompli

Accompli was a technology company best known for its mobile email client for iOS. Founded in 2013 in San Francisco, the startup aimed to streamline mobile email by integrating mail, calendar, and contacts into a single app designed for productivity. The Accompli app supported multiple email accounts (including Exchange, Gmail, and Yahoo), offered a unified inbox, smart scheduling, and gesture-based navigation, all wrapped in a clean, fast interface.

The product was noted in the tech community for its design-forward approach and rapid user adoption, drawing attention from investors and the press as a modern alternative to traditional mobile email clients. The company’s early emphasis on a polished user experience and seamless multitasking helped it stand out in the growing field of mobile productivity apps.

In December 2014, Microsoft announced its acquisition of Accompli for approximately $200 million. Following the deal, the Accompli team joined Microsoft, and the technology and learnings from the app were integrated into Microsoft’s mobile strategy. The Accompli product provided the foundation for Outlook for iOS and contributed to the broader push toward cross-platform email solutions within Microsoft’s Office ecosystem.

Impact and legacy: The Accompli acquisition is regarded as a notable example of a small startup influencing a major software company’s mobile direction. By adopting Accompli’s concepts, Microsoft advanced its mobile email offering and helped shape a cohesive, platform-conscious approach to Outlook across iOS and Android.