Launch Mail. If Mail is not in your dock, Command (⌘) + Space Bar. Then type Mail in the Spotlight search. Press enter to launch the Mail application.

Within Mail, click Mail on the top left. Then select Add Account from the dropdown menu

In the pop-up window, select Other Mail Account and click Continue

On the next screen, enter the following information:

Click Sign In

You will see an alert that says Unable to verify account name or password. Along with this alert, you will see more fields that require additional info. Fill in the following details:

Click Sign In

Click Finish
Next, we will make sure our SMTP server settings are correct, as Apple Mail tends to change them automatically during setup

Within Mail, click Mail on the top left. Then select Preferences

Select the Accounts tab at the top of the window, then select your IMAP email account from the left pane

Click on the Server Settings tab, next to Mailbox Behaviors

Under Outgoing Mail Account, Uncheck the automatically manage connection settings. (Make sure you do it under SMTP, and not IMAP, as they have the same checkbox) this will unlock a new area below

Change the Port Number to 587

Close the Accounts window

Finally, go back to the Mail app. Your mail should begin downloading shortly if it hasn’t already.

Launch Outlook. If Outlook is not in your dock, Command (⌘) + Space Bar. Then type Outlook in the Spotlight search. Press enter to launch the Outlook application.

Within Outlook, click Outlook on the top left. Then select Preferences… from the dropdown menu

Select Accounts

In the new window, click on the + on the bottom left and New Account…

Enter your email address

Outlook will sometimes automatically select Exchange as the account type. Click on Not Exchange on the top right corner to switch the account type

Select IMAP/POP at the bottom

Enter the following details:

Click Sign In

Click Done

You’re done. You should see the main Outlook window and your email should begin downloading shortly.