Sign into the Backblaze.com site

Click the "Sign in to Restore" link and enter your Backblaze account email address and password.

Select the Computer you want to Restore

Click the "Restore File" link next to the computer's name you want to restore.

Select the Mail Folder to Restore

On the 'View/Restore Files' page click the folders: 
Macintosh HD > Users > YOURNAME > Library > Mail
Select the Mail folder and click the button 'Continue with Restore'

Download the restore zip file

Backblaze will email you when your restore file has been prepared. It can take anywhere from a minute to a few hours depending on the size of the download file. You can then click on the 'My Restores' page and download the zip restore. Usually your web browser (Safari, Firefox) will download the restore file to your 'Downloads' folder. Wait for the download to complete and then double click the zip file to uncompress the files. 

Copy Restores to the Correct Folder

The restore file should unzip in your 'Download' folder and be called 'Users'. Open it up the'Users' folder to view the restored file. In another window, go to Macintosh HD > Users > YOURNAME > Library > Mail
We recommend creating a new folder called 'old' and put your local copy of the Apple Mail files inside. Then select and move your restored files from the Download folder to the local Mail folder. 

Open Apple Mail and make sure your email restored succesfully.