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O365 External Email Banner

I implemented a cautionary External Email Banner to Office 365 a while back -- Prepended Subject Line with "External Email" along with appending message with Cautionary note indicating the email originated outside organization. I chose appending so that Outlook users would still be able to utilize their email preview view.

Problem is that messaging gets lost in email body.

In looking at the different rule options I found the option

Apply this rule if "The message"  "Character set name includes any of these words" see image below:

Appears that you can do the same for both the Subject or Body.

I am looking to use this filtering option to prepend email message with in your  face yellow highlighted  prepend cautionary note - If subject or body contains the following: Change Password, Update Password, Account, Identify, Confirm, Suspended, etc

Looking for feedback from the Experts on this thought. Good, Bad, Other.

What key words should i be looking for? What verbiage should I use on the cautionary note? Of course it goes without saying that we do have cyber training in place along with periodic reminders and knowbe4 type of analytics.



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Microsoft 365Cyber Security

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Vasil Michev (MVP)
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Vasil Michev (MVP)
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Microsoft 365
Microsoft 365

Office 365 is a group of software plus services subscriptions that provides productivity software and related services to its subscribers. Office 365 allows the use of Microsoft Office apps on Windows and OS X, provides storage space on Microsoft's cloud storage service OneDrive, and grants 60 Skype minutes per month. Office 365 includes e-mail and social networking services through hosted versions of Exchange Server, Skype for Business Server, SharePoint and Office Online, integration with Yammer, as well as access to the Office software. All of Office 365's components can be managed and configured through an online portal; users can be added manually, imported from a CSV file, or Office 365 can be set up for single sign-on with a local Active Directory using Active Directory Federation Services.

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