This behavior of Outlook 2016 (or other Outlook versions too) occurs because of a damaged Send / Receive group within Outlook.
So first I tried disabling cached mode, it worked initially but after the initial update, I tried to send an email to the address, and it never appeared. Deleted the profile, and recreated it, which looked liked it worked, but any new emails after that point do not appear, however outlook continues to download old emails.- 3. Did a total removal/re-install and that still didn't work.There are times when emails don’t get downloaded automatically in Outlook.It does not automatically perform send/ receive operation to download emails from the server.When Outlook doesn’t update automatically, it really becomes difficult.So how to fix Outlook not updating automatically issue?
To select multiple folders, press and hold CTRL as you click folder names (or click the first one, hold shift, and click the last one).