My husband and I both have Samsung S8 phones. We both have access to our business email account on our phones. We have discovered that if either one of us reads or deletes an email on this account, it shows up as read on the other persons phone or the other person never sees it because it was deleted by the other user. We use Outlook at home and things being deleted on our phones are not showing up in our Outlook accounts. We have never had this problem before. We both went into the settings on our phones and we do not have the option to "not delete from server". It is no where but all of the fixes I have read for this problem state to choose this option. I delete lots of things off of my phone because I don't want my in-box cluttered with the intent that I will read/deal with them via Outlook at home and they are gone. We really need some assistance with this because it is causing problems.