when i try to do a diagnostic:
-i can sand a mail directly by WordPress, it work perfectly
-when y try by Newsletter, it say:
“Newsletter TEXT test email NOT sent: try to change the sender data, remove the return path and the reply to settings.
Newsletter HTML test email NOT sent: try to change the sender data, remove the return path and the reply to settings.
Newsletter both TEXT and HTML test email NOT sent: try to change the sender data, remove the return path and the reply to settings.”
i have clear “return path” and “reply to” settings, but it do exactly the same thing.