Can I add a non-user's email address to an existing PM thread?

Continuing the discussion from Send a Personal Message to an Email Address:

Is there a way to extend this so we can “add a non-registered person” to a PM thread by including their email address somewhere? I see in the UI that I can enter an email address using the Add or Remove … button in the block of existing particpants. But if I enter an email address there, the UI/UX looks more like it’s sending an “invitation” as I would invite an email address to an existing topic.

OTOH, the UX for starting a new PM to an email user seems pretty obvious. (Instead of typing a username in the composer recipient box, just use an email addreess and a little :email: appears.) I’m just not sure how to loop these folks in to existing conversations.

「いいね!」 1

これはまだその状態です。招待のように見えますが、実際にはメッセージにメールアドレスを追加しています。

Discourseでのステージングユーザーの処理に関するUIは改善が必要ですが、現時点ではあまり使用されない機能であるため、優先度は高くありません。