On Thursday, July 31st, 2025 at 18:13, Derick Rethans <der...@php.net> wrote:
> Hi Mathieu, > > Questions around this, are probably better directed at syst...@php.net, > but it's here now, so I'll answer. noted. > > On Thu, 31 Jul 2025, > > Mathieu Rochette > > wrote: > > > At work we built a feature in a mail client that deals with > > newsletters subscriptions. > > > > Subscriptions are identified by messages having a List-ID or > > List-Unsubscribe header. Then, to differentiate mails being > > newsletters or list discussions, one heuristic is to look at the > > `Precedence` header, it can be `bulk` for mass mailing (so > > newsletters) or `list` (discussions). And when working on that I > > noticed that PHP lists were wrongly sent the mails with `Precedence: bulk`. > > Is this something that could be fixed? > > > I can certainly change the "Precedence: bulk" header to "Precedence: > list". I would have to do that for all our 124 lists, but I am > moderately reluctant in doing this, as Google is being annoying > requiring specific things for email delivery, and I don't want to upset > them again. I would be surprised if they penalized you for this since you'll more accurately describe the messages. I don't know how their delivery systems works though, so I understand if you don't want to gamle on it 👌 > > > It's not a big deal since I've since added another heuristic that > > works woth the PHP mailing lists (classify subscription as discussion > > is it has a `List-Post` header) but wanted to let you know, it may be > > useful for other clients if / when they implement features using those > > headers. > > > > Also, the List-ID is not properly formatted, it's supposed to be > > wrapped in angle brackets but it's not, so instead of `List-Id: > > internals.lists.php.net` it should be `List-Id: <internals.lists.php.net`> > > or even ``List-Id: PHP Internals list <internals.lists.php.net> to give it > > a human friendly name. One downside of fixing it though is that it may > > break automatic filtering rules of people matching exactly `List-Id: > > internals.lists.php.net`.`` > > > We can easily change the List-Id header too, as long as I don't need to > add a manual description to all 124 of them. So for now, I would suggest > to change them to "List-Id: <internals.lists.php.net>". Would that work? Yes that would be great, adding a description is optional and can be done later too. if you feel like it you could do it only for the most used lists too for example. thank you, Mathieu > > > cheers, > Derick > > -- > https://derickrethans.nl | https://xdebug.org | https://dram.io > > Author of Xdebug. Like it? Consider supporting me: https://xdebug.org/support > > mastodon: @derickr@phpc.social @xdebug@phpc.social
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