Business email....adding a new recepient
When you added someone in the Cc field instead of fowarding the same mail message to the person, what do you write the other recepiants that you added this person?

"I've looped in so-and-so"? "I've added so-and-so in the Cc field."?

For example, you sent an email to a couple of recepients, and then you notice it would have been better if you added another person who may this messange handy. So you send the same email again after adding the new recepiant.
What would you write when you send the email?

Thank you!

Question

Business email....adding a new recepient
When you added someone in the Cc field instead of fowarding the same mail message to the person, what do you write the other recepiants that you added this person?

"I've looped in so-and-so"? "I've added so-and-so in the Cc field."?

For example, you sent an email to a couple of recepients, and then you notice it would have been better if you added another person who may this messange handy. So you send the same email again after adding the new recepiant. 
What would you write when you send the email?

Thank you!

Answer

You could say: Sorry I forgot you guys, you're not less important to me... kidding
I think there is lots of possibilities and each one has its use depending on the case, I would write, for example:
1. FYI (for your information, when you just want the other people to be aware of the email, and probably there will be no more responses over it)
2. Sorry, I forgot some emails, just resending. (same case as previous)
3. Please, ignore the previous email which does not include everyone, consider this one for further response. (Here you include everyone, even the ones who alredy received the email, because you expect people to answer you, and when they do everyone gets the new email, considering that the ones answering use the "reply to all" option).
I think I would do something like that...

Answer

"I've CC'd so and so in."

If it is a business email, I wouldn't send it twice. I would send it only to the person I omitted in the first sending of the email, and attach a note; "I thought this would be of interest to you."