It’s time for reminders in SharePoint

Personal productivity is essential to teamwork.  SharePoint lists and libraries have long allowed to you defined custom metadata columns to track dates.  As announced at Ignite 2018, we are releasing a new capability that lets you set reminders for any of these dates.  You’ll be able to receive a personal email alert ‘x’ days in advance of a date on any document or item in SharePoint.

https://techcommunity.microsoft.com/t5/Microsoft-SharePoint-Blog/It-s-time-for-reminders-in-SharePoint/ba-p/299190