Google nottoomuch. You and others asked, and like me, I felt pain when moving away from mu because it is built into the binary. These scripts allow you to cahce a contact list that scavenges the databses for all email addresses. You can ignore stuff and do other fun stuff with it.

(Disclosure: I am very happy user of these scripts.)

http://www.guru-group.fi/~too/nottoomuch/nottoomuch-addresse...