• by Jess Nelson , August 31, 2016

Microsoft will shutter the Outlook feature Sunrise on Wednesday, the mobile calendar application it acquired a year and a half ago for a reported $100 million.

With the servers shut down, Sunrise users will no longer be able to use their calendar application.

Founded in 2012 as an email newsletter filled with a user’s agenda and task list, Sunrise pivoted and transformed to eventually be a free calendar application available on both Android and iOS devices, as well as online.  When Microsoft acquired Sunrise in February 2015, it stated that the application had millions of users.

Although August 31 marks the end of Sunrise, the company’s team has joined forces with Microsoft and promise to deliver their application’s features to Outlook.

“We are currently working on integrating all the extra features that made Sunrise so delightful to use in Outlook for iOS and Android,” Sunrise stated in a company blog post. “Expect features like Interesting Calendars, Connected Apps and our 3-day view to show up before the end of the year.”

Microsoft has integrated some Sunrise features into Outlook Calendar, but as of now that promise remains to be delivered.

Microsoft added Sunrise’s Interesting Calendars feature to Outlook in early August, but its release of Calendar Apps in April fell short of the degree of integrations originally available in Sunrise. Sunrise could be integrated with 16 third-party sources, including LinkedIn and Eventbrite, but Microsoft has only revealed three available integrations for Calendar Apps in Outlook: Wunderlist, Facebook and Evernote.

Sunrise marks one of the many productivity-focused mobile applications Microsoft has acquired in recent years. The company acquired email startup Acompli in 2014 for $200 million, and picked up Wunderlist, a to-do list app, in 2015. Just last week, Microsoft also acquired AI-driven scheduling application Genee.

A future Calendar App for Outlook integration with LinkedIn is also likely a safe bet, considering Microsoft has acquired the company in June for $26.2 billion.