I have a hard disc which is failing and need to be absolutely certain I have my emails securely backed up somewhere as they contain legal information which will be required in the near future. I have a SSD for C drive which is OK and has space and Thunderbird is on that drive but I do not know where the old emails are stored. Can I backup this data somehow just in case? There are two other SSD's in the computer which are OK and have space. The drive which is failing is a HDD. All are fairly recent; I plan on replacing this with a smaller SSD