I recently installed Avast Cleanup-speed booster.
Shortly I discovered that the inbox in my Exchange Server account gets cleaned out appr. once a day.
I uninstalled Avast Cleanup-speed booster, and now the problem appears to be solved.
I hope that some Avast official sees this because the link to support is dead at the moment.
Otherwise, the app really cleans up an impressive amount of memory.
Hi, could you please specify what app from Microsoft are you using? They have several ones in Google play. It could be helpful if you could turn Safe Clean review on in Settings, then you can see exactly what folder of that Microsoft app is getting deleted by Safe Clean. Thanks.