QuickBooks Online – How to Export GIFI

I based my solution to this off of the code to add Gmail as a mailto: handler, and adapted using information taken from Google Chrome's preferences file:

javascript:window.navigator.registerProtocolHandler("webcal","https://calendar.google.com/calendar/render?cid=%s","Google Calendar");

To use it, just go to Google Calendar, open Firefox's Web Console (Ctrl+Shift+K), and paste it into the code box.

If you can import the EML files into a mail client that support IMAP this will be easy.

It seems that Thunderbird can do this, but I'm not 100% sure. (Don't have a local copy to play with.)

Anyway, set-up Thunderbird to be an IMAP client for Gmail. (Lifehacker has an excellent guide to do this.)

Then, import your EML files into Thunderbird.

If necessary, move them to a temporary folder (called "Zimbra" perhaps) which will be a label in Gmail. Then just wait for IMAP to sync them all to the cloud.

After that you can delete Thunderbird, keep it around to make local archives of your e-mail, or keep using it as your main client.

I was able to do this a couple of years ago with thousands of messages from my Pegasus Mail client. (There was some pain in converting to a format that Thunderbird could read, but getting the messages into Gmail was the easy part.)