I like using the version of Outlook that comes with Office to handle my Outlook.com email account on a laptop. I like using the calendar, address and task features as well as the email handling.

On a small tablet and my phone, I use the version of Mail that comes with Windows 10 for accessing my Outlook.com address. It's okay, but really crippled compared to Outlook. I found that program doesn't deal well with my ISP provided email address so I'm also running Thunderbird on my tablet. Currently, I'm also using Thunderbird to access my gmail account. I may switch those to Outlook as well on the tablet. Thunderbird is okay, but I'm just more comfortable with the full features of Outlook.