In Outlook MailTips are turned on by default, here is how you turn them off:
First go to the ‘File’ Tab and click on ‘Options’
Then go to ‘Mail’ scroll down and click on ‘MailTips Options’ under the ‘MailTips’ Section.
Select the account you want to turn MailTips off by using the dropdown box next to ‘Apply to this account’
Now you can choose the option you want under ‘MailTips bar display options’
If you want to learn more about Outlook, then take a look at our Outlook Training