Not necessarily.
I want to thank you for helping me last night. A comma would wrong here.
"Thank you," said Sam. There is a comma here, but it is not because of the words "thank you." You would write: "I want ice cream," said Sam.
Thank you usually stands by itself or with an appellation. "Thank you, Sam!" In this case, the comma is there to set off the appellation, not because you used the words thank you. For example, you would write: "Go screw yourself, Sam!" or "Sam, thank you so much."
it depends where its at in a sentence
No, the sentence "Thank you John" is not grammatically correct. It should be written as "Thank you, John." Adding the comma after "thank you" separates the person's name as an interjection in the sentence.
No.
Not usually : "Thank you for listening to me" does not need a comma. However, if you write their name afterward ("Thanks, Fred."), you need a comma after thank you.
v Recommend donor recognition and thank you protocols and development policies, as needed.
no. if but before is a sentence on its on and after but is a sentence on its own then put a comma before but.
Comma's are the hardest punctuation mark to place in a sentence. A comma can be placed after instead at the beginning of a sentence if the sentence is a continuation of the subject in the one before it.
Yes, you should capitalize the letter after a comma in a sentence.
Yes, you should capitalize the word after a comma in a sentence.
No, there should not always be a comma after the word "hopefully." It depends on the sentence structure. When "hopefully" is at the beginning of a sentence, it is often followed by a comma, but if it is used within a sentence, a comma is not necessary.
No, a comma is not needed after "yes" when starting a sentence.
Yes, you should capitalize the first letter after a comma in a sentence.