Setting up mail in Microsoft Outlook

Follow this guide to set up your email account with IMAP in Outlook for Microsoft 365 and Outlook 2016, 2019, and 2021 for Windows.

Step 1 - Open Outlook and click File
Step 2 - Click Add account
Step 3 - Type in your email address
Step 4 - Enter your password
Step 5 - Close automatic setup
Step 6 - Go to File again
Step 7 - Go to Account Name and Sync Settings
Step 8 - Set the Root folder path
Step 9 - You are done!

If you are making changes to your account settings, are moving mails from one account to another, or especially if you have set up your account as a POP account, it's essential to make a backup of your email

This way, you make sure you don't lose any critical emails if something goes wrong. Every email client has its way of doing this, so please follow the instructions for the email client you're using.

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Step 1 - Open Outlook and click File

Open Outlook on your computer and click File in the top left corner.

Screenshot of Outlook with an arrow pointing to File in the menu in the upper left corner.

Step 2 - Click Add account

Click Add Account to start setup.

Screenshot of Outlook showing an arrow pointing to Add Account in the Account Information window.

Step 3 - Type in your email address

Type in the email address you want to add and click Connect.

Screenshot of Outlook showing red arrows pointing to the Email address field and the blue Connect button.

Step 4 - Enter your password

Type in your password, it is the password that you also use to log in to Webmail.
Click Connect to continue.

Note: If Outlook cannot detect your settings automatically, please select IMAP and then enter the settings below, or check our troubleshoot guide for alternative settings.

- Incoming mail: imap.one.com - 993 - SSL/TLS
- Outgoing mail: send.one.com - 465 - SSL/TLS

Screenshot of Outlook showing red arrows pointing to the Password field and the blue Connect button.

Step 5 - Close automatic setup

Click Done to complete setup.

Please continue on the rest of steps 6-9 since these are important for correctly synchronising the folders in your mailbox.

Screenshot of Outlook with a red arrow pointing to the blue Done button.

Step 6 - Go to File again

Your email account is now set up, but you need to add an additional setting to make sure all emails are delivered to the correct folders.

Go to File again.

Screenshot of Outlook with an arrow pointing to File in the menu in the upper left corner.

Step 7 - Go to Account Name and Sync Settings

Select the email you want to check the settings for in the drop-down bar at the top of the screen.
Click Account Settings.
Select Account Name and Sync Settings in the drop-down menu that appears.

Screenshot of Outlook showing numbered red circles in the Account Information window.

Step 8 - Set the Root folder path

Under Folder settings, type in INBOX as the Root folder path, all in capitals.
Click Next to save your settings.

Screenshot of the IMAP Account Settings window in Outlook with red arrows pointing to Root Folder Path and the blue Next button.

Note: If you’re using Outlook 2019 and can’t find the Root Folder Path, follow these steps instead:
File → Options → select Advanced → scroll to Send/Receive and click the S/R button → select the group you want (most users only have one) → select Edit → select the email account you want to change → select Account Properties → go to the Advanced tab and enter INBOX in the Root folder path field.

Step 9 - You are done!

Click Done and go to your inbox. Here you can see that all folders are on the same level as your inbox.

Screenshot of Outlook showing a red arrow pointing to the blue Done button.

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