title: My email to text sent to vtext.com stopped working
body: <p>I have been sending emails (through gmail accounts and gmail smtp server) to text gateways of various wireless providers and they worked pretty well for years until this year. The messages stopped working for all verizon numbers a few months ago. I didn't receive any feedback as to why it stopped working. It is as if the email was sent successfully and then silently swallowed by vtext.com. I tried to limit the number of recipients per email but it didn't help. I did a lot of searches online but could not find a sure reason what has been changed. I started to suspect that my ip or domain has been blacklisted by verizon, but I have no way to contact verizon support about its gateway policy and whether my suspicion is true. The customer support of the wireless department said he knew nothing about vtext.com and thus could not help. All my messages are sports team related (inclement weather, etc.) and they are not spams.</p>
  
  <p>I'd really appreciate any help on finding out the true reason this stopped working, and who/where I can contact to resolve this. This is very important for my web site.</p>
  
  <p>Thanks!</p>