Open Windows 10 Mail App.

If this is the first time you've opened the Mail app, you’ll see a Welcome page. Select Add account to get started..

If you've used the Mail app before, at the bottom of the left navigation pane, select Settings , and then choose Manage Accounts.

Select Add account.

Choose Advanced setup.

Choose Internet e-mail.

Enter your e-mail account information and click Sign in.

• E-mail Address: Your full e-mail address.
• User name: Your full e-mail address.
• Password: The password for your e-mail account.
• Account name: Your full e-mail address.
• Send your messages using this name: Your name as you would like it to appear.
• Incoming e-mail server: mail.mtco.com
• Account type: IMAP4
• Outgoing (SMTP) e-mail server: mail.mtco.com
• Verify all boxes are checked
• Click Sign in

Click Done.