I am to buy an HTC Desire Z, but syncing my contacts categories is important to me.

I have carefully read Dejaoffice website and understand how DejaOffice syncs categories.

Question: will I be able to select categories in my "To" field, in order to send a group email or SMS to my selected categories?

I have posted the smae thread, but for iPhone 4. Depending on the answers I eceive, I will decide to buy an iPhone or an HTC Desire Z.