Exchange Online - Prepend Subject Line to the end of the subject line

sl 41 Reputation points
2020-09-18T22:58:02.98+00:00

I have the rule to prepend the subject line but it places the prepend subject at the start of the subject line instead of the end. Is it possible to have the prepend subject at the end of the subject line?

Microsoft Exchange Online Management
Microsoft Exchange Online Management
Microsoft Exchange Online: A Microsoft email and calendaring hosted service.Management: The act or process of organizing, handling, directing or controlling something.
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  1. Andy David - MVP 109.3K Reputation points Microsoft MVP
    2020-09-18T23:02:09.407+00:00

    Not possible
    https://learn.microsoft.com/en-us/exchange/security-and-compliance/mail-flow-rules/mail-flow-rules

    Actions: Specify what to do to messages that match the conditions in the rule, and don't match any of the exceptions. There are many actions available, such as rejecting, deleting, or redirecting messages, adding additional recipients, adding prefixes in the message subject, or inserting disclaimers in the message body.

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  1. Yuki Sun-MSFT 24,601 Reputation points
    2020-09-21T07:00:07.38+00:00

    @sl Great to see that you have got useful information from the reply provided by Andy. By the way, in addition to the link shared by Andy, the table in the following official article also indicates that it's only supported to add the specified text to the beginning of the Subject field of the message:
    Actions for mail flow rules in Exchange Online

    26056-prependsubject.png


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