Valued Delta-chat team, developers user,
as elsewhere already mentioned (messages not displayed topic), it seems like as if no-reply mails, mail sender without box, do not get into Delta-chat, such as notifications of the forum here and other notifications.
As delta is actually handy as exclusive client, how to fix it, how to make sure no second email-client is needed any more?
you have to set “all” in email interactions in “chats and media” in settings, and even then I think it doesn’t shows up if it is detected as mailing list, but in the next release seems mailing list support will be added so it will work 
Sadhu (appreciation) for care.
Yes, and my person gets all mail aside of those, he thinks, tought to have observed, do not have a mailbox (such as notifications from websites or other no-replay mails). It, if that way, might be also an issue with alias adresses then, as far as my way of thinking could imagen.
We filter out messages from mailinglists. I don’t know exactly how this filter works, probably it also filters out notifications from eg this forum. @Hocuri is currently working on adding mailinglist support and in general we are currently focusing on making dc usable as a more full email client. So expect this to be solved in the soon future
Appreciation for information and effort, good master Jikstra.