See BulldogXX's reply and let me add the following:
As far as I'm concerned, the program that comes with Windows 10 is a poor choice. There are many other choices available, some by Microsoft, some by third-parties, some for sale and some free. They are almost all better than what comes with Windows 10.
I personally use and like Microsoft Outlook.exe (part of Microsoft Office, *not* Outlook.com). What I recommend is that you ignore my personal preferences or those of anyone else,; instead download, install, and try a few, then choose the one *you* like best.
Some people like to use web-base e-mail, and you should consider that choice also. However as far as I'm concerned, web-based e-mail is the worst possible way of doing it.