What's the proper response after receiving an email from an unfamiliar sender accusing an academic of my discipline of misconduct with evidence? I have recently received an email from an unknown source where an academic (who I don't know) is accused (backed by some evidence which I haven't examined in detail) of misconduct, particularly academic plagiarism.
Since the academic is not from my university I am not sure what to make of it.
What's the proper course of action in this case?
There is no action needed or appropriate on your part unless you are part of some official investigation.
You might want to be wary of both parties in the future, however. Especially the email sender. Accusing others with such mail is a form of defamation.