The following manual will show you how to save your emails locally in a simple way, as a backup. Using Thunderbird, as mail manager, using the free add-on importExportTools NG available for it.
The configuration shown in this manual requires that your email account is previously managed through Thunderbird: Configure my Hosting email accounts in Thunderbird
ImportExportTools NG is a free Thunderbird add-on that gives users the ability to easily import and export emails.
Since ImportExportTools is not by default in Thunderbird, below we will provide a step-by-step guide on how to install and use ImportExportTools in Thunderbird in order to create a backup of mails from an entire mail account or specific folders.
In the Thunderbird manager, go to Tools → Add-ons and Themes.
A new window will open. Enter 'ImportExportTools NG' in the top search bar and press Enter.
Select the "ImportExportTools NG" add-on and click the "Add to Thunderbird " button.
You may get a pop-up window asking you to grant permissions to the new plug-in to continue the installation, click "Add ".
Once you have installed the required plug-in, you will be able to export the emails locally as a backup, as detailed below.
Right click on the name of the email account --> ImportExportTools NG --> Export all the folders.
The file explorer will open for us to indicate the destination folder, select a folder and the export will start. Depending on the size of the mail account, it may take a few minutes for the export to complete.
The procedure is similar to the previous point, but with a small difference.
We right click on the folder we want to save --> ImportExportTools NG --> Export Folder.
We indicate the destination folder and wait for the export to finish.
That's it! Now you know how to save your emails locally so that it is a backup for your emails.