No that's actually proper grammar, you put a comma before the persons name to indicate that is who you are speaking to. I do it all the time in work emails when I say something like 'thank you, Eric. Have an excellent day!" I'm not expressing that Eric sent the thank you, but rather the thank you is directed towards Eric.
No that's actually proper grammar, you put a comma before the persons name to indicate that is who you are speaking to. I do it all the time in work emails when I say something like 'thank you, Eric. Have an excellent day!" I'm not expressing that Eric sent the thank you, but rather the thank you is directed towards Eric.