[Update]: The article was last updated on August 20, 2024 to include the latest developments (e.g. MailTips caching) plus information about blocking/allowing MailTips and MailTip errors.
MailTips, or mail tips, are the notifications Outlook, Outlook on the web or Outlook for iOS and Android shows when an email you create meets some requirements. They appear, for example, if you’re about to be send an email to external recipients or to someone who has automatic replies turned on. Those notifications can prove to be very helpful or, on some occasions, even life-saving. Continue reading...