Gmail – Using Gmail to read PST files

You can directly push them up via IMAP, in a completely scripted fashion.

1. Enable IMAP for your Google Apps mailbox (see docs here and here).
2. Then, loop over all of your mbox files with the Ruby script described at http://blog.tquadrado.com/?page_id=181. This script correctly avoids a date problem that some IMAP clients have, where all your e-mails that get imported look like they are dated from the time of import instead of the time of date.

I imported a 2GB mbox file into GMail recently with no problems.

The OS X and Linux command-line make it easy to run Ruby scripts (and use bash to loop over all your mbox files); you may have to do a bit more work if you are using Windows.

In Gmail you can use a search operator which if you get more than one different email address forward to you in the search bar you can typpe to:theemailaddress@gmail.com and then you can get all that mail from that address, you can also do that for mail from a address.

With a IMAP client you can index the files better which means more faster searches.