I can't help but think this has probably been asked before, but I did do a search and didn't see an answer that addressed my issue.
I have at least one friend, who whenever she sends me an email, in the column that shows the name of the sender, as well as anywhere else that the sender name is displayed, her email address is displayed instead of her name.
I have her on my contact list, I have all her email addresses stored, and we email frequently.
I have cleared out the "Other" category of my contacts list to ensure there isn't an overlapping entry for her, as well as confirm there are no duplicates in any other category of contacts.
This is definitely happening with this one person, and I think it might be happening with others.
In any case, what do I do to force Gmail do display a contact name instead of the email address?