Rated 4 out of 5 stars

An essential tool for those using many email identities... but not too many.

A few months have passed but the issue described by Drachsi below is still a problem: the configuration dialog does not expand if you have more than a few indentities.

If that's a deal-breaker for you, you can try my experimental version fixing the issue and adding multiple frame styles.

https://bitbucket.org/dreadnaut/bordercolorsgt-dre/