As I mentioned in the first 'Free Stuff Friday' article; OpenOffice vs Microsoft Office, there is an excellent free alternative to Microsoft's pricey Outlook program.
From the people that bought you Firefox (also worth a look if you are still using Safari, Internet Explorer or Edge for a web browser), Mozilla also created Thunderbird, a mail client that is much better than the default mail clients that come with Windows or macOS. For most home users it is more than sufficient for reading, organising and writing e-mails. And until the latest versions of Outlook, it is much easier to set up. Upon installation, you simply need to enter your e-mail address and password and it will automatically configure your mail server settings for you, which can confuse a lot of people if they are unfamiliar with it.