[delta-dev] Re: webxdc, a new way to run web apps in a chat

it doesn't supports groups if that is what you meant (joining an XMPP room from deltachat/email) it is only for private chats, if you meant joining an XMPP user to a mailing list, that is quite possible if you are the mailing list owner or moderator, adding the email address that bridge to the xmpp user