I entered Potomac by mail and have not received an
e-mail confirmation. Has anyone received confirmation on a mailed entry?

Yes I received email confos.

I also mailed my entries but when I didn't get e-mail confirmation, I called the day before the closing. They were confirmed but I still haven't received an e-mail. They may just be backed up due to the number of entries. Call MB-F Monday to find out.

Got the Email confirmation last week. about 4 days post mail.

Thanks everyone. I mailed them six days before closing. I'll call Monday.

Go to your bank online and see if your check cleared.

Email them. They will reply.

Dumb question, but if you mailed it did you furnish your email address at the bottom of the entry form? It's easy to miss.