It Works! Rated 5 out of 5 stars

It may be a "minor enhancement," but for me and Thunderbird, it's just right. Too many times, I've had to wait to enter the master password again (then again) as TB loaded. Now, the request comes up before TB loads (just like SeaMonkey). Type it, click Enter, and move on. Just as it should have been all along.

This review is for a previous version of the add-on (1.3).