Bug: Held-for-moderation messages never get sent out via email?

E.g. dmlloyd’s message starting “Sure, I can elaborate.” in the ““To” headers on Discourse emails” thread, which he mentioned was held for spam moderation never got emailed out (at least, not to me).

I got my own reply, followed by dmlloyd’s followup starting “Well! I replied but then got this response:”, and the subsequent 2 messages – but never the one which was initially held for moderation and later released. (And no, it didn’t go into my spam folder)