Close Thunderbird completely. This is crucial to ensure all files are properly saved and not "in use" during the copy.
If you prefer a "set it and forget it" approach or need to export emails to other formats like PST (for Outlook), professional software can simplify the process. Backup Thunderbird Emails for Beginners - Mozilla Support thunderbird backup emails
Note: If your profile is larger than 2GB, manual copying (Method 1) is safer and more reliable. 3. Using the "ImportExportTools NG" Add-on Close Thunderbird completely
Right-click the folder, select Copy , and Paste it into your backup location, such as an external hard drive , USB stick , or a cloud service like Google Drive or Dropbox . 2. Built-in Export Tool (For Profiles Under 2GB) Backup Thunderbird Emails for Beginners - Mozilla Support
Under the Application Basics section, find Profile Folder and click Open Folder (or Show in Finder on Mac).
You can also select specific emails, right-click, and choose Save As to export them as individual .EML files to your computer. 4. Automated & Third-Party Backup Tools
Choose a destination (like your Desktop) and click . This creates a single ZIP file containing your entire profile.