TB Header Tools Extension 0.4.5 Requires Restart
by Frank DiLecce
You can now modify the header detail of messages...
About this Add-on
Please see http://forums.mozillazine.org/viewtopic.php?t=279907
for screenshots and explanation
You can now modify the header detail of messages...
To create your own collections, you must have a Mozilla Add-ons account.
Some add-ons ask for permission to perform certain functions. Since you’re in control of your Thunderbird, the choice to grant or deny these requests is yours.
Please note this add-on uses legacy technology, which gives it access to all browser functions and data without requesting your permission.