New iCloud email added to iPhone5 without changing Apple ID,in order to automatically copy all iMessages that uses that new iCloud email to said email

If we create another icloud e-mail can we:

1) Add it to our phone to send and receive emails without affecting the Apple ID being used on the iPhone 5?

2) Use that "New iCloud email" to iMessage with a specific person (i.e. Coworker A will only send us texts with their iPhone using that new iCloud email and we'd only contact them and respond to their texts with that new iCloud email?

3) If, all of the above are possible, then could all your conversations with Coworker A be automatically copied to our email? In other words, we can view the conversation on our iMessage and on our email that we added the new iCloud email to?

If not, how can we have our conversations automatically copied to an email in order for us to that not have to screen shot every Conversation which is quite cumbersome?

Thanks