We can't send ONLY text emails. It always has HTML code in the background and email providers see that as spam. Please see attached MailGenius screenshot.
We should be able to send pure text emails without any HTML code or any kind of code. Even if I have to sacrifice tracking and reporting, I would do it for a specific kind of email campaigns.
By the way we need to have that in all email sending boxes in the Email builder, conversations ...etc.