Review for XNote by indigomm
Rated 4 out of 5 stars
Very useful for adding notes to correspondence. Works with our IMAP server too (Cyrus IMAP) which is great.
Can be fiddly to edit an existing note though - not sure why but I seem to have to click on it quite a bit before it will let me edit.
Using XNote 2.0.1 with Thunderbird 2.0.0.0 on Ubuntu 7.04.
To create your own collections, you must have a Mozilla Add-ons account.