External Sender ToolTip in Outlook 365 Clients
Starting on April 12, 2023, Northwestern IT is enabling functionality in Outlook 365 clients (including Outlook for Web, Outlook desktop clients, and Outlook mobile applications) that indicates via a ToolTip when e-mail is received from an unaffiliated external source.
Please note that the ToolTip's existence does not indicate that a message is unsafe. It is a visual cue to remind the recipient to take extra care in determining where a message comes from and to use caution when responding, clicking links, or opening an attachment when the message source is external.
Below are examples of what this ToolTip will look like in different Outlook clients.
Outlook for Web
Outlook for Desktop (Windows, macOS)
Outlook for Mobile (Android, iOS)