Looks like this script is not being regularly kept up to date.

Does nothing at all in FF 3.5.6 on a Mac Leopard.

Great idea, and would have loved it had it worked.

Unfortunately, no result, no stars :(

It Stopped working for me. But my review remains unchanged.

I don't like anything that adds another pop up to doing things especially email but I have to admit waiting the extra nano-moment to validate the 'from address' is something I've been wiling to put up with to spare myself that 'DOH! moment' when I realize I sent it using the wrong damn 'from address'.

So I really like the concept/ implementation.

if you're replying to someone, it could see if he/she mailed you on any email, and use it to answer. i hope this script improves over time.

A very simple script that makes it much, much safer to use GMail with multiple "From" addresses. Thanks for writing this.

This script is great. This alert is something that should be a default in gMail when you enable the ability to send from multiple addresses.

Prevents the gaff of me sanding my boss an email from my superhotpants2349@gmail.com address. Just kidding... or am I???