Undelivered Mail Returned to Sender Home › Forums › Newsletter Plugin Support › Undelivered Mail Returned to Sender This topic has 1 reply, 2 voices, and was last updated 7 years, 9 months ago by Stefano. Viewing 2 posts - 1 through 2 (of 2 total) Author Posts February 15, 2017 at 9:29 am #29721 AnonymousInactive The plugin said unzustellbar 0 Bounce are not detected by Newsletter plugin. But we receive over 1000 that are Undelivered Mail ? When does the plugin mark an email as an Undelivered Mail ? How can we make this important adjustments ? THANKS February 15, 2017 at 9:58 am #29722 StefanoKeymaster Bounces are managed only with out integration to external delivery services which provide even the bounce detection and reporting. If you want to try to manage the bounces on your own, try the Bounce plugin. Stefano. Author Posts Check out our premium plans with priority support. Viewing 2 posts - 1 through 2 (of 2 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In