Try sending it "read receipt requested." If you don't get a response ( of some sort), the recepient sent your missive to the bit bucket. "if the phone doesn't ring, you'll know it's me."
did you receive back your confirming copy? Audiogon's mailer has stalled on me before too, but they were able to "unstuck" it when notified of the problem. I did lose a sale though.
I have used Audiogon to e-mail 2 sellers in the last few days and so far neither one has responded. Either a problem with e-mail or the sellers just didn't respond in a timely manner.
You must have a verified phone number and physical address in order to post in the Audiogon Forums. Please return to Audiogon.com and complete this step. If you have any questions please contact Support.