Sending stops after some mails

screenshots under
sending of the newsletter stops after a short time.
What coud be the reason ?

how to put code with line breakes here in ?
I like to post my config file …

@joe_schraube If you are sending through the browser then you need to keep the window open. But it is more reliable to use a cron job. See the online documentation at

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ok thanks - if I close the browser it stops sending … ? hm ok for what is this good for ?
I will read and learn … :wink:

ok I get it with the API Key it woks … but it failed also

Error: Process Killed by other process ?