Most of iOS email apps/clients are not privacy friendly, meaning that emails and passwords are stored on third party servers. Think about all most popular apps like Cloudmagic, Blue, myMail, etc. I have found some good Android apps like Aquamail that are much better in terms of privacy, not storing any email, but still I am stuck with iOS. I could not find any app that does not store emails on their servers. Are you aware about any? Thanks.