Responses specific to you across all StackExchange networks is usually available from your StackExchange Inbox. This includes responses to your comments, comments to your questions/answers (even if their not directed at you), chats or answers in general.
For user MyUser (number 1234567), the address is
http://stackexchange.com/users/1234567/MyUser?tab=inbox
or accessible by clicking on the StackExchange drop-down menu in the top left of the browser and selecting Inbox.