The RR Button and Icon software adds an icon on the header panel indicating a receipt request has been returned. Thunderbird 3 also includes an icon on the status bar to enable/disable delivery status notifications. Summary is 47 words.
In Thunderbird 3, there's another feature that comes with this software - an icon on the status bar which lets you enable/disable the "delivery status notification" request. This feature is great, especially if you want to keep track of emails that have been sent. If you're someone who wants to know if an email has been delivered successfully, this feature is a must-have.
Overall, I think the RR Button and Icon software is incredibly useful, especially for people who receive a lot of important emails. The software is easy to use, and it doesn't take up too much space on your computer. If you're looking for a reliable software that can help you keep track of emails, then this is definitely worth checking out.
Version 0.3: N/A