I probably should have added a disclaimer when posting this: - "A while ago" is about a year ago. When choosing a new email client, run your own test and don't

I probably should have added a disclaimer when posting this: - "A while ago" is about a year ago. When choosing a new email client, run your own test and don't take my stale test results. emailprivacytester.com is fantastic. - It is not an apples-to-apples comparison. I used Apple's native client as a pure IMAP client fetching directly from my email server, while I think many other apps want to pre-process your emails on their own server sides so they can providing timely email notifications without eating your smartphone's battery for background activity.