IDX is for index, the index to your mail basket.
>
> 3. Now, The idx file is directly associated with the amount of
> files in your folder, so if you have a lot of e-mails in a folder it is
> going to have a couple hundred Kb in it, and if you don't have but 1 or
> 2 the number will be significantly less, maybe as low as 1 or 2 kb
Delete your mail regularly, and compress your folders regularly.
>
> 4.For those of you who have been running a lot of e-mail through your
> account, and had MSIE up and running for quite sometime, look at your
> inbox.mbx, mine had grown to 29MB! That's what caused me to look in the
> first place, I kept trying to find out "What in the heck am I storing in
> these files? Why is my inbox empty and this .mbx file shows such a high
> number???" So I kept hackin... I decided to try a text viewer (Most of
> you have WordPad) I right clicked the Inbox.mbx file and choose "Open
> With" a dialog box pops up - WARNING, you must make sure the "Always use
> this program to open this file" Is NOT Checked!
>
> 6. Inside was the complete record of
> every e-mail I had received, over 1000 e-mails and absolutely every one
> I deleted prior to this point, I Was Mad ! ! ! ! !
Try doing the compress folders and see if the deleted message text is still
there. Also remember that your client is configured by default to save a
copy of all of your outgoing (or sent) mail.
To turn it off in Internet Mail, Click on View, Options, and uncheck the
box that reads "save copy of sent messages in the 'sent items' folder."