Seamonkey Email Address book Improvements

In an earlier post, I suggested a number of improvements one of which 
included passwording access to the address book for security reasons. I 
would be very willing to sacrifice incorporating passwords as one 
suggested idea but would be very keen to see a simple email address 
deletion facility in the address book. Hopefully it would check with the 
user to ascertain they actually wanted to delete a particular email 
address before actually executing the instruction.