I just installed the K9 app on the Nook Color (use it on my android phone, too), and it makes it much easier to read email than the stock email app. However... I can't find any way to have my contacts pop up while I am composing email. This makes it virtually unusable. Anything I'm doing wrong, not doing? Ideas...
I surfed around the net and in going into various android forums, this seems to be an ongoing complaint. Some people were saying that if you type in a first name it will bring up contacts with that first name, but not if you type in a last name