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In order to assist our users in identifying phishing threats, the WPI email system signifies all external inbound emails with [EXT] in the subject line of the email message.


New External Messages

[EXT] in the email subject line signifies the message was sent to you from an email address outside of WPI. 

Example of an external subject line:

[EXT] Compliance Training

Internal Replies and Forwards of External Messages

External emails forwarded or replied to will still contain the marker even though the sender may be internal. The difference is that the subject line will begin with RE: or FW: followed by [EXT].

Example of an internally forwarded subject line:

FW: [EXT] Compliance Training

Example of an internally replied to subject line:

RE: [EXT] Compliance Training