[davids3511]

Always backup to at least 2-3 places.

Mine is backup up to computer, USB and two lots of cloud storage.

I couldn't imagine losing all that data, nightmare.

Every week Email a copy to yourself.  A copy of your attachment will also remain on your email providers's server.

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That's a dangerous assumption. Email providers usually delete the messages once it has been retrieved unless you are using web based email such as Hotmail.

[The Jester of Wibbly]

Also be careful where you store your customers personal data.   GPDR