Email marketing is essential. It still delivers more bang for the buck and effort than Facebook, Twitter and any other form of contact with fans. But how many times have you hit send, only to find that you messed something up  or left something out that's going to make you look sloppy and/or severely lower your response rate.  Here via Pure 360 is a simple checklist to use before you hit send on your nest email blast:

via Pure 360