Am 05.12.19 um 09:07 schrieb Petter Reinholdtsen: > > Anyway, I was just curious what the answer to the question "why" would > be. Now I know. Thank you for the clarifying answer. :) > The answer is actually a bit more complex, with aspects of "problem already solved externally", "not mandated by standards", and "not trivial to implement and document".
There are so many questions that will want to be asked back, for instance, what should the domain part be, do we need to make it configurable (either way it needs documentation) and all that. High cost, little potential gain, I dare say not frequently needed, and as shown the problem has already been solved by others externally - and in a way (not quite coincidentally) that you can integrate into your setup. And it's really only necessary for the specific circumstance that further parts of the mail setup really fail in hard or very awkward ways if the Message-ID is missing, and that seems to be a feature of older notmuch implementations fixed a few releases ago. There are other feature requests that won't catch a "wontfix" tag that quickly because either they have low cost, or are hard to solve externally (for instance, expire kept messages on server after N days) or are otherwise more sensible to do without duplicating existing solutions.
