No it’s been the same setup forever. Maybe I didn’t notice it so much because we did not have such a long conversation before maybe.
I’m using POP3.
Here is a screenshot of email server settings (I replaced the domain and email but kept the options the same)
Here are some relevant email settings (sorry no text details)
Yet, if Discourse received a copy, it should be able to identify replies, since they bear a thread of Message-ID, References and In-Reply-To headers. Moreover, the Subject headers should remain close enough (mostly the “Re:” that can change across languages), then it should be trivial to process replies to an existing topic in most cases. I think that’s what most email clients are doing?
I would be interested in learning about what would prevent Discourse from implementing proper email threading for any email it receives, not just emails it generates. Since email-in is a feature, there should be a way to ensure proper usability. Again, I’m happy to give a hand. Where should I look?
In my case, an email address assigned to a Discourse category is sending the email, then a conversation starts among people using various email addresses. Discourse receives everything. Although it didn’t generate the headers, they are consistent and related to each other.