I will reiterate what previous users have said. This is up to you. It all depends on the context the sentence is in. If it is requesting an answer, follow up with a question mark. If not, then you do not need one. I hope this clarifies things. Thank you, Lieutenant Eengleesh nurd.

I will reiterate what previous users have said. This is up to you. It all depends on the context the sentence is in. If it is requesting an answer, follow up with a question mark. If not, then you do not need one.