@julian@activitypub.space @paulgc I'm lucky none of my projects so far have needed to really deal with replies, so I haven't had to think about this.

But it reminds me how I've been told that Misskey sends an account's likes to its followers in addition to the author of the liked post, which Mastodon does not. So on Misskey, if a post comes by your feed that someone you follow has previously liked, you see that information. That's cool in some ways and showcases implementation differences in activity delivery.

@paulgc Glad it's working! Although now that I've tested it myself, I'm not quite as confident anymore. A test reply I made at https://activitypub.academy/@begusla_laddaciul/115865414668779913 has the ActivityPub `to` set as the account's followers and `cc` to as.Public, but was sent to my server anyway. So I guess the behavior, at least on activitypub.academy, is to not individually address the parent poster, but send them a copy of the post anyway (presumably justified by W3C ActivityPub §7.1.3). Feels a bit funky.

@julian@activitypub.space @reiver

In other words, @paulgc, you should be seeing those Create activities if the reply comes from Mastodon. I think if you reply to a post on your server from https://activitypub.academy you can inspect the payload that gets sent.

@julian@activitypub.space @reiver

@julian@activitypub.space Replying now because I only saw this thread today (h/t @reiver), but I don't think this is quite accurate as written regarding Mastodon.

AIUI, Mastodon decouples replying and notifying. If you reply to a post from a Mastodon server but do not tag the author of the parent post, they will be part of the ActivityPub recipient list (and their server will receive the reply), but if the parent poster is also on a Mastodon server, they will not receive a notification about the reply.

@paulgc