I can have only one window (message or box) open at one time while in Mail. When I want to have a look at inbox or another message I will have to close the message that I am writing or reading. The problem has not always been there. It appeared around a year ago. But I do not remember what did change in the environment. I am not aware that I did change any setting. Please advise solution, many thanks in advance. Dirk
OS X/iOS version: 10.9.5
Software involved with the issue: Mail OS X
Version number of the software involved: N/A
Piece(s) of hardware involved: Mac Air
Error message(s): None
OS X/iOS version: 10.9.5
Software involved with the issue: Mail OS X
Version number of the software involved: N/A
Piece(s) of hardware involved: Mac Air
Error message(s): None