Henrik Gemal has added some code to Thunderbird (as a first step he says) to provide extra protection from phishing.   Sounds like a pretty good start to me.  You’ll get a warning if the link you clicked on in an email is an IP address instead of DNS, or if it’s a different address from the one in the text of the link.  A little goes a long way here, and this will certainly be a big help. 

Good work!