There are two main protocols for email applications.
1) POP3 (Post Office Protocol 3)
2) IMAP (Internet Message Access Protocol)
You can change your POP3 connection to IMAP connection via the steps below.
1. Back up mailboxes
Back up mailboxes is an important step as switching from POP3 to IMAP may cause email to be deleted.
Go to Outlook and select
File>Open & Export>Import/Export.
Select
Export to a file>Next.
Select mailboxes that you wish to backup and ensure to check the checkbox next to
Include Subfolders. Click Next.
Click
Browse and select a location on your computer to store the backup. Click
Finish.
You
can create an optional password to ensure your backed-up emails are
secure. Click OK after setting the password. You may click
Cancel to proceed without password.
2. Remove POP3 account from computer.
Once Step 1 is successful, proceed with deletion of POP account in Outlook and account in other devices. Select
File>Info.
Go to Account Settings>Info. Click on arrow down and select
Account Settings option.
Click on email account and click
Remove to delete from Outlook.
A pop up will appear to inform you that all offline messages will be deleted. Click
Yes to continue.
3. Set up IMAP account on computer.
Create new email account on computer using IMAP server details.
There are two ways to create new email account.
a) Click
New... buttion in Account Settings.
b) Click
File>Add Account
Select
Manual setup or additional server types>Next to proceed.
Under
Choose Your Account Type,select
POP or IMAP>Next.
Enter IMAP server settings for email account.
a. Email address - FULL email address
b. Password - server email password
c. User Name - email account user name
d. Account Type - select IMAP from dropdown menu
e. Incoming Mail Server -
mail.domain.com
f. Outgoing Mail Server (SMTP) -
mail.domain.com
g. Logon information- enter email account user name and password.
Click More Settings.
Under
Internet Email Settings, click on
Advanced tab.
The Non SSL settings are as below.
SSL settings are as below:
As for Outgoing Server, check the box
My outgoing server (SMTP) requires authentication.
Select
Use same settings as my incoming mail server.
Click
OK and
Next.
Outlook will test email settings.
In the event the testing fails, retrace steps and ensure server and account details have been entered correctly.
Once test is completed, click
Close and
Finish.
4. Restore mailbox
To restore mailbox, choose
File>Open&Export>Import/Export.
Select
Import from another program or file>Next.
Under
Import a File, select
Outlook Data File (.pst)>Next.
Click on
Browse to retrieve Outlook backup file. You may select one of the Options to configure how Outlook treats duplicate items. Click
Next.
You will be asked to authorize with password for the import if you have set one during the backup. Enter the password and click
OK. Select the folder you would like to import the backup data to by selecting the folder via the drop down menu. Click
Finish.