If you are referring to emails stating when Altz UI is updated, than you have the preference selected to email you when an addon on your Favorites list is updated. You can either remove it from your Favorites, or disable that setting.
1. Hover your mouse over AddOns ^^
2. Hover over Options at the bottom of the menu that appears
3. Click on Preference
4. Change the top setting to "no"
"You'd be surprised how many people violate this simple principle every day of their lives and try to fit square pegs into round holes, ignoring the clear reality that Things Are As They Are." -Benjamin Hoff, The Tao of Pooh