It did not do this before. But now all my test emails go to spam. I have never marked these as spam in my email and there is nothing in the content that should make an email provider think that it is spam.

Gmail Marks the email with this message "Why is this message in Spam? We've found that lots of messages from zcsend.net are spam."

Has zcsend.net been blacklisted? I am concerned that this will happen to all emails I send in this campaign.