Hi @Omar
Apple is as bad as Google or Microsoft when it comes to privacy, they just hide it better and do way better safe-washing. In the end you are never admin on an apple device, using proprietary apps or software is always a risk as you have to trust the company behind and you don’t know what they added into it or where the data flows. You simply have no control. I would not recommend to use using iPhone Mail to you as your primary app, but I would also not recommend you to use an iPhone (as I said you are not admin). Also keep in mind not to backup your mails in some sort of apple cloud. It makes less difference on what you use on a closed system, but if you would like to start at some point I would recommend you
- remove personal emails from an iPhone
- if that is not possible, use a web browser for checking your emails