I was able to get the SOP Historical Invoice to Email, and use the messageID written for for the email. However, when I changed the messageID in the defined "Email Settings" for Sales, and also for the Customer, the messageID will NOT change. I even deleted the original messageID, and GP keeps emailing the original email... the first one sent.
Is there a GP email cache that needs clearing?
Or a flag that needs resetting in SQL when emailing?
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