I'm currently trying to collect old data, most importantly e-mails I
sent and received in the 90s. I even found about 350 mails from back
then. Luckily, they were stored in mbox[1] files, so I could easily[2]
import them into my current maildir[3] structure.
See, they *could have been* stored in some proprietary or binary
format. But they weren't. I used Netscape Mail back then which stored
everything as mbox. I guess, Thunderbird still does the same today?
Dunno.
It is vital that we save important data in simple file formats. It is
vital that we use free and open file systems. Otherwise, our data can
be considered lost.
____________________
1.
https://secure.wikimedia.org/wikipedia/en/wiki/Mbox
2.
http://www.uninformativ.de/?section=news&ndo=single&newsid=107
(german)
3.
https://secure.wikimedia.org/wikipedia/en/wiki/Maildir