In Outlook > File > Info, select Add Account:
Enter your email address and open Advanced Options, select the checkbox:
Select IMAP or POP:
Fill out fields as per welcome email we sent to you:
Enter your password (preferably by copy & paste) and click Connect:

Please be aware of the limitations of your email accounts, and above all, avoid sending bulk emails from your email.
Sending mass emails damages the reputation of your domain (when email recipients mark your email as spam) and is prohibited in this service. This includes, but is not limited to:
- News bulletins
- Unwanted advertising (that is, not requested by the user)

There are suitable alternatives for this type of communication, for example
MailChimp.