Content of inbox, draft and sent emails folders have disappeared, inbox emails now only showing from the 19th January 2016 on all my devices!
My email account is accessed via Mail on Mac OSX (El Capitan), Mail on MacBook Pro (OS 10.8.5), iPhone5S, as well as BT mail.
Emails are behaving erratically, for example when I open Mail I have a downloading message saying that Mail is downloading about 200 messages when only the unread ones (around 30 per day) are showing!
Any suggestions as to what is happening???
