TagExternal flow for Office 365

Purpose

Exchange online allows you to mark external messages using a transport rule. The common way to do it is to prepend a Subject line or a message text with a warning string like
"[EXTERNAL] this email originated outside the organization".
This method has at least 2 disadvantages:

• The Outlook preview shows the warning message for each external email rather than the first line of the message like they are used to.

  

• A back and forth email conversation would have the warning prepended multiple times.

  

You can place the variable %%From%% to the warning string. It will be replaced by the envelope address of the sender:

Installation

1. Download tagexternalflow3.zip file and then run Office 365 PowerAutomate and import the zip file to your flows list as described here.

2. Modify warning message in the action "[PARAMETER] Initialize variable WarningString".

3. Modify the list of internal domains in the action "[PARAMETER] Initialize variable InternalDomains".

   

4. Enable TagExternal flow.

Testing

Open Outlook and check if the message is marked as external.

F.A.Q.

Q. Is there a way to change the color of the category?
A. Yes, just create your own colored category as described here. If you wish to use a company-wide category, try to use this freeware tool: CatMan.



This application is a freeware.

Please understand that we do not provide technical support for our freeware products.



Price of support

If you need to get technical support, please buy at least one support unit and contact us. NO REFUND.

Price of one support unit

$35.00

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