While the 2009 holiday season was marked by retailers serving up a variety of payment options in response to the recession, the 2010 holiday was noteworthy for the extra attention given to shipping options. With shipping such a huge point of friction when shopping online, retailers are certainly wise to explore new offerings. Here are some shipping trends from retailers' emails during the holiday season:

With addresses on email lists turning over every three years, growing email lists must be a priority for marketers. Good list maintenance will help reduce churn while giving you a more accurate view of your delivery, open and click-through rates. A clean list also will ensure that you're in compliance with CAN-SPAM laws. Growing and maintaining lists is not difficult, but it does take effort. To make the process easy, I've developed five New Year's resolutions for growing and maintaining email lists.