From reading a few topics, it seems that this is a possible feature?
To combat spam, many people use wildcard domains, plus addressing or Gmail dots. Unfortunately Discourse doesn’t allow for this meaning any email replies to threads and PMs bounce instead of working correctly. Anyone using these methods should be able to authorise additional send-from addresses to enable these protections but not lose out on core Discourse functionality.
So can anyone a) confirm this is possible with Discourse and, b) tell me where in settings I can add additional reply-by-email addresses to my account (or, as an end user, what I need to ask the forum host for)?