How to reply beneath the message I want to talk about in the Thread

Sorry for asking you this kinda trivial question, but I couldn't find how to do it in the 'mailman' webpage.
Would you mind telling me how I can send my email to be shown beneath the message I'd like to discuss in the tree of Thread?
Thank you so much.

Seung Jae Lee

Sorry for asking you this kinda trivial question, but I couldn't find how to do it in the 'mailman' webpage.
Would you mind telling me how I can send my email to be shown beneath the message I'd like to discuss in the tree of Thread?
Thank you so much.

Reply to a message that is part of the thread. That will keep them together in the archives.

-Tanya