How To Backup Gmail Using Thunderbird

Gmail had some issues a few days ago and reseted some email accounts so many people now want to backup their Gmail account(s). I got this request by email so I though I'd suggest a very simple way to backup your Gmail account: using Thunderbird.

 

Using the exact instructions in this post, Thunderbird will not delete your Gmail emails and will not mark them as read so it acts exactly as a backup, without interfering with your actual emails.