Ok, I have 7 email accounts. All 7 are on my computer and phone via imap, all perfectly fine except for 1 account. This one account is on gmail(so are 3 others) When ever I get email on this account and I read it on my phone, it does NOT mark it as "read" in the mail program, but when i go online or look in the all mail folder in apple mail it is marked as read. I have removed this account and readded the account I have used the "rebuild" option in apple mail What can it be? Sooo annoying. All other features work perfectly fine too, like when i send mail from my phone it shows up on the computer within a minute.