Why would you use a nonOpensource email client such as eM client or the bat professional instead of those Opensource like thunderbird, fairmail or k9mail?
I have heard mentions of a bunch of these email clients which are either opensource or nonopensource and I am wondering about why would you use an email client which is not open source as atleast for the opensource one, you(or let's be honest someone else) can check if there is anything malicious about the code inside.
So again, why use something like this?