Say I provided an answer to a question, and then another user commented on my answer pointing out some mistakes. I realise my answer has serious flaws and decided to delete it.
Now, I want to talk to that user. To follow up the discussion started in the comments. I can start a chat room, but now there is no post / comment thread where I can post the link of the chat room. I cannot find this user in any other active chat room.
How can I "ping" a specific user, with no previous chat presence? Are there alternatives to chat?