Contacts issue
when I open my mail on my iPad, iPhone 6, macbook Pro, and my iMac desktop... The sender of the email may or may not be who the mail is really from.
For instance, I may get an email from Frank Smith, but if I click and open it - it is actually from Debbie Jones. The subject lines are always right and the body of the emails are fine...it is only the senders addresses that are wonky. It's completely random and lots of times the sender line is correct, but many times it is not.
IVe vey rebuilt the mailboxes but nothing seems to fix this. I suspect it is a "contacts" issue but I have no idea how to fix it? Any ideas?
iOS 9.2.1