When posting comments on saves sometimes you might expect a reply, but you never know if/when it'll be replied to so you would have to check it to find out.

I suggest 2 comment notification types~

One would be something like a little (!) next to the vote counter on your own saves to show a new comment, and it would go away after you opened the save box which you would see the comment in.

The other would be a small icon near the search bar (in the blank spot to the right maybe?) maybe just a (m) symbol; that would show a comment was posted on a save where someone typed @(your name) in their comment, links to all saves the comments were on would be in a box type menu that pops up when the icon is clicked (or it could simply show their reply text along with your previous message)

*a little off-topic*

an ingame mailbox where players could direcly message each other would be super great also~

Communication can be extremely helpful in tpt, i believe players should have a more efficient means of giving feedback and support to each other ingame and these ideas would greatly improve each players experience

lol looks like its been suggested before... but yeah exactly like that