How can i connect with MSN mail

Hi 610main,

Thank you for participating in the Apple Support Communities. We understand you'd like to set up your MSN mail account on your MacBook Air. This article has the steps: Set up Mail on your Mac with email accounts.

"Use the Mail app to send, receive, and manage email for all of your email accounts in one location. Simply add the accounts—such as iCloud, Google, Yahoo!, Exchange, work, school, or other—you want to use in Mail.

Add an account

• The first time you open Mail, it may prompt you to add an email account (if you haven’t yet done so). Select an account type, then enter your account information.
• If you don’t see your account type, select Other Mail Account.
• To add another account, choose Mail > Add Account, select an account type, then enter your account information. Make sure the Mail checkbox is selected for the account.
• If you already use an account on your Mac with other apps, such as Contacts or Messages, you can also use the account with Mail. Choose Mail > Accounts to open Internet Accounts preferences, select the account on the left, then select the Mail checkbox on the right."

We hope this helps.

Take care.

Also...

Also Mac's Mail App is not as modern as iOS's Mail app, Many eMail providers now require a separate App Password different from your eMail password…

It may just need an App Password...

https://support.google.com/mail/answer/185833?hl=en-GB