For over a year now my mail never works in my iMac with Yosemite. On my ipad and galaxy S3 phone it always works and they keep up with each other when I delete or send e-mails. My iMac never deletes the e-mails I tell it to delete as they always come back no matter how many times I will delete them. Anyone have a solution to keep my iMac mail the same as my phone and iPad mail? Sick of my deleted e-mails always coming back.