There are many different types of email accounts you can add to Outlook, including Microsoft 365, Gmail, Yahoo, iCloud, and Exchange accounts.
Some third-party email providers, like Gmail, Yahoo, and iCloud, require you to change some settings on their websites before you can add these accounts to Outlook.
Outlook for PC- Windows Setup
These steps are the same whether you're adding your first email account or additional email accounts to Outlook.
Select File > Add Account.
2. Enter the email address that you would like to setup and click Connect
3. If prompted, enter your password again, then select OK > Finish to start using your email account in Outlook.
That’s all-you have successfully setup your email account in your desktop outlook.
Outlook for Mac
Add a new account quickly
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5. Select Done to start using Outlook 2016 for Mac.
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That’s all-you have successfully setup your email account in your desktop outlook.
Reference:
Add an email account to Outlook - Office Support (microsoft.com)
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