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Keep Thunderbird but wipe hard drive

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I need to reset a computer to factory settings that I am currently running Thunderbird on. How can I preserve the emails I have now so when I am done, all of my emails will come back once I get Thunderbird going again?

I need to reset a computer to factory settings that I am currently running Thunderbird on. How can I preserve the emails I have now so when I am done, all of my emails will come back once I get Thunderbird going again?

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