Sending as an Additional Email Address
Sending as an Additional Email Address in Outlook for PC
Do you have another email address that you would like to send from sometimes, but not always? Below are the steps to create a sending only POP account in Outlook that will allow you to choose another email address when creating a new message.
Note: Do not send and receive with this account until you have shut off receiving in the Send/Receive settings as shown in Step 11. If you do, it is possible to duplicate your mailbox.
4. Enter your information as described and shown below then click More Settings …
Your Name: This will display in the account drop-down menu in a new email message
Email Address: This should be your additional email address
Account Type: POP3
Incoming Mail Server: Outlook.Office365.com
Outgoing Mail Server: Smtp.Office365.com
User Name: This should be the email address you use to log into portal.microsoftonline.com
Password: This should be the password you use to log into portal.microsoftonline.com
6. In the Internet-Email Settings window click the Advanced tab then enter the information as described and shown below and click OK.
Incoming server (POP3) - 995
This server requires an encrypted connection (SSL) - should be checked
Outgoing server (SMTP) - 587
Use the following type of encrypted connection - TLS
Leave a copy of messages on the server - should be checked