Request delivery receipt from Outlook 2016

Hello, I was wondering, if it is possible to get a delivery receipt (not read receipt) using the Kopano plugin for Outlook 2016.
Right now it seems only read receipts are implemented, the request for a delivery receipt seems to be ignored.
Could this be implemented using a plugin, maybe, or would this be part of the Outlook plugin?

Hello @Raven24 ,

I’m not quite sure where this information could get lost. Can you create a wbxml log in Z-Push from sending your message? Maybe a look at the spooler.log (with raised loglevel) could also proof useful.