I have been using Snappermail flawlessly on my Verizon 650 until 3 weeks ago when I could no longer send out emails. After much frustration I have decided to use Versamail. After setting Versamail mail I now get the 535 5.7.0 authentication failed error message. Verizon assures me the smtp is correct. I can receive with no problems but can't send. Any help would be appreciated.