This is a well-known and well-documented issue. In Android 7.x you need to "un-optimize" K9 in the battery settings.
Settings -> Battery -> three dot menu, Battery optimization Select All apps and make K9 Not optimized. Problem solved. On Wednesday, May 17, 2017 at 11:29:10 AM UTC-5, Terry Schupp wrote: > > K9 has worked well for many years but after my last 2 Android updates it > seems to quit checking my email unless I open the app. After I open K9 and > check my mail it may work fir an hoir then it seems to go a sleep. Any one > else experiencing this. I have a Samsung Galaxy S7 on Andriid version 7.0 -- You received this message because you are subscribed to the Google Groups "K-9 Mail" group. To unsubscribe from this group and stop receiving emails from it, send an email to k-9-mail+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
