If the local Outlook OST or PST file reaches 50GB, you will get the following message in Outlook: The Outlook data file has reached the maximum size. To reduce the amount of data in this file, permanantly delete some items. If you can't delete any items, you can add a value in the Registry to increase the maximum size. For example, to increase the maximum size for a PST or OST file to 100GB, add the following value: HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Outlook\PST MaxLargeFileSize Read more [...]

If you are using Outlook and you are connecting to Exchange Online, you might see (depending on what your IT administrator has set) a big "External" label to the left of each From field on each email that has an external sender. This can be quite distracting, expecially if 95% of all your emails are coming from external senders. You can remove that "External" label, by replacing the "From" column with a custom "From" field. Here is how to do it: In Outlook, go to View > View Settings Click Read more [...]

Outlook has an editor feature that suggests to insert your full name whenever you start typing your first name. This is really annoying because you might want to use only your first name for signing off your emails (i.e. "Regards, John", instead of "Regards, John Doe"). You can switch it off, but not in the auto-correct or auto-format options, as you might have expected. Outlook has hidden it under "Quick Parts" and "Building Blocks". Here is how to disable this annoying feature: Create a Read more [...]