1) I will send an email to Rick and copy you on that.
2) I will send an email to Rick and I will copy you on that.
Which of the above is correct?
Answer
Both are essentially correct, although the second example requires a comma between “Rick” and “and.”
In a compound sentence the two independent clauses must be separated by a comma and a conjunction, or by a semicolon (without a conjunction).
The second rendering, with its comma, places somewhat more emphasis on the speaker’s promise to cc: the message.
Attribution
Source : Link , Question Author : javanoob , Answer Author : Rob_Ster