cathaychris

Thank you for the information. There appears to be no indication about how the visa receipt will occur on the application website.
I did certainly provide an e-mail address, but not a postal service mailing address (except what appears on my passport). I am pleasantly surprised by the sensible use of technology in cases like this; it is as it should be.

Since the visa is to be delivered by e-mail and not by the postal service, and Qatar working hours begin on Sunday, then almost two business days remain prior to my travel, and so I will be patient. (Though since the status has remained unchanged since 16 July, I emailed to service to query them, since this worked for others in this thread.)