RtoRe is a simple Thunderbird extension that does one job, to remove multiple R:'s from the subject field when replying.
RtoRe is an add-on designed to work with the Mozilla Thunderbird (2.0 - 2.0.0.*) email client.
How to Install in Thunderbird:
1. Right-click the link below and choose "Save Link As..." to download and save the file to your hard disk.
2. In Mozilla Thunderbird, open Add-ons from the Tools menu.
3. Click the Install button, and locate/select the file you downloaded and click "OK".
· Mozilla Thunderbird