Rated 5 out of 5 stars

Here's how I used addresscontext recently. (1) Placed a classified for some free Mac G3's on Craigslist. (2) Added a label to each person to responded. (3) Went into Thunderbird and selected the label to view the 12 interested people. (4) Selected them all, right clicked and used this extention to add them to a single list. (5) Email them all in one fell swoop.

Doing it this way saved at least 30 minutes for this small list. Imagine what you can do if you put your Gmail in Thunderbird and run a few filters on your old email...