Re: An address book question, or two.

Go to 

Preferences -> Address Database

and in "Expand methods to use", make sure you have 

Addr_Lookup

as the first entry.

Now go 

Bindings... -> Simple Edit

and the first box is 

addrexpand

Assign a key here (I use <Tab>), and next time you are composing a message, 
type any part of a known address into the To: or other field, hit that key you 
assigned, and exmh will complete the name or give you a name picker popup.
-- 
rick baartman