There should be an option to prevent recipient auto-completion without explicit selection (via mouse or arrow keys) when more than one address matches. Auto-competion is highly desirable, but it is _far_ too easy to accidentally just accept the first choice even when it is the wrong one. My experience is that errors are extremely frequent amongst my users (I'm an IT manager) and I even make them myself quite regularly. This should be optional but on by default. I have an HCI background and I would say that that may be the single biggest usability improvement you could make to mail.

change qa contact -> nbaca. Reporter, Please go over the bug writing guidelines which will help in bug getting fixed. http://www.mozilla.org/quality/bug-writing-guidelines.html

Sounds reasonable. pi

I think I've seen dupes of this