I've mentioned this several times already but kindly refrain from excluding CC please.
ご質問ありがとうございます。
・「I've mentioned this several times already but kindly refrain from excluding CC please.」
「I've mentioned this several times, but please do not forget to include CC.」
(意味)[何度も](https://eikaiwa.dmm.com/uknow/questions/87607/)お伝えしていますがCcをはずさないでください
<例文> Thank you for your email. I've mentioned this several times, but please do not forget to include CC.
<訳> メールありがとうございます。何度もお伝えしていますがCcをはずさないでください。
参考になれば幸いです。