Linux.com: Import mail into Gmail with the Gmail Loader
Mar 19, 2007, 20:45 (0 Talkback[s])
(Other stories by Joe 'Zonker' Brockmeier)
[ Thanks to Nobody for this link.
"To test GML, I uploaded about 1,300 messages from one
mbox-formatted mailbox to a Gmail account. It took several hours. I
didn't see any problems with the mail after upload. Gmail seemed to
get the conversation threads right after mail was uploaded, and the
original message dates were preserved. For some reason, Gmail
tagged quite a few imported messages as spam..."