How to Backup Your Email Using Outlook or Thunderbird
Before making any changes to your email or DNS settings, it is strongly recommended that you create a backup of your existing email.
This guide will walk you through backing up your email using Microsoft Outlook or Mozilla Thunderbird to a local folder on your computer.
This applies to most versions of Outlook (including very old versions).
This also applies to Thunderbird.
Backups should be saved somewhere safe (your computer or external drive).
Important Notes Before You Begin
If your email is configured as POP3, messages may only exist on your computer — backup is critical.
If your email is IMAP, messages are stored on the server, but a backup is still recommended.
Do not skip this step before migration.
Backup Options for Microsoft Outlook Users
Method A: Copy Emails to a Local Folder (Quickest Simple Method)
This method works well for most versions of Outlook and is especially useful if you are not comfortable using the export tools.
Create a local folder:
In Outlook, scroll down to Outlook Data File or Personal Folders
Right-click → New Folder
Name it something like Email Backup
Open your mailbox (Inbox or other folders).
Select emails to back up:
Hold Ctrl to select multiple emails
Or press Ctrl + A to select all
Right-click the selected emails → click Copy
Go to your new Email Backup folder.
Right-click inside the folder → click Paste
This creates a copy of your emails stored locally on your computer.
Important: Do not drag emails unless you intend to move them. Dragging without copying will remove them from the server.
Tip: If you are using IMAP email, copying messages into a local folder ensures they are downloaded and stored on your computer, even if they were previously only on the server.
Method B: Export to PST (Recommended for Long Term Backup)
Outlook uses a file called a PST file to store email backups.
Open Outlook.
Go to:
File → Open & Export → Import/Export
Select Export to a file.
Select Outlook Data File (.pst).
Select your email account or top-level mailbox.
Ensure:
Include subfolders is checked
Choose a location to save the file (e.g. Desktop or Documents).
Click Finish.
This will create a complete backup of your email.
Method C: Copy Existing PST File (Older Outlook Versions)