Updating cached messages outlook 2016 imap
Follow these steps to compact the local cache file: NOTE: Outlook Connector includes the option “Download Headers Only” under the Send/Receive tab of the Outlook Connector Client configuration screen.When this option is enabled, Outlook only downloads the information needed to show messages in the message list, and not the full content of each message.Whether you use POP, IMAP, Active Sync or Outlook Connector, you can perform various tasks to improve Outlook’s performance.Follow the steps outlined below to keep Outlook running like a well-oiled machine.
Users may experience a slight delay in viewing messages in the preview pane when “Download Headers Only” is enabled because Outlook has to download the rest of the message when it is selected.
And none of these techniques requires a single configuration change to your Exchange server (IMAP or POP3).
Of course, some of these suggestions might seem to have a bit more "'duh" factor than others.
While IMAP performance is slower than for POP3, Exchange or Hotmail account in Outlook, long hangs or even crashes of Outlook should not happen.
There is currently 1 hotfix available to improve Outlook’s resiliency when it comes to IMAP accounts which might improve your situation.