we have a use case in which we add a unique string sent in every email sent out of system. We are forced to put the unique key in email subject and forcing the users not to alter the subject which some customers are not ready to accept. So i've been trying to use custom email headers (X-Header_Name) set while sending the email message out. When i check the email headers in outlook client i could see them

Added the custom header in "request" tab of the email listener's service package and mapped it to clipnboard page <<ServicePage>>.pyInBoundEmail.UniqueEmailKey

Unfortunately the custom header never been copied onto clipboard. Custom headers are not supported at all in email listener's service package at all? Or are there any specific headers reserved for customer use so i can set my unique key into it?

I have tried using Thread-Topic but while sending the reply, email clients are setting Thread-Topic with subject line.

Quick responses are appreciated.

Thanks,

Prasad

***Edited by Moderator Marissa to update SR Details***

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