These steps are the same whether you're adding your first email account or additional email accounts to Outlook.
- Select File > Add Account.

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What you see next depends on your version of Outlook.
For Outlook for Microsoft 365 and Outlook 2016
For Outlook 2013 and Outlook 2010
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On this screen, enter your email address, select Advanced options, then check the box for Let me set up my account manually and select Connect.
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Select your account type. Most of the time when you need to use this option, you'll select IMAP.
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Ensure Account settings screen be populated with these account settings you need.
- Username: Your full email address. e.g. name@yourdomain.ext
 - Incoming / Outgoing mail server: mail.yourdomain.ext
 - "My outoing server (SMTP) requires authentication" this settings must be checked or you may not be able to send email successfully.
 
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Enter your password and then select Connect.
 
