Several times every week I recieve asked for guidance when it comes to multi forward created by others during business time. Because it is a business e-mail does that mean they no more own it? Because an e-mail is written on business time, is not going to negate copyright and common courtesy.
In the event you copy the original sender or ask when it is O.K. before forwarding their e-mail? Ccing doesnt negate requesting permission. E-mails are sent and written to the party for which they were intended, regardless of when or where these are written and they are to not be delivered to others minus the senders permission first. Period or risk the effects.
Now, as everyone knows, there should be no expectation of privacy online. But that doesnt mean anything goes or that business courtesy is trashed your window!
You could be putting your enterprise in legal jeopardy when you forward away from company and you may be putting your reputation as a professional at risk by forwarding internally. In running a business, copyright issues are much more at play and each and every responsible company must have a policy on what can and really should be forwarded and exactly how via e-mail.
Common courtesy dictates you may not forward without having the original senders knowledge. They could not appreciate the e-mail they wrote to you being shipped to those they dont know. Or they mult1forward not mind by any means. So just ask!
Certainly it ought to go without proclaiming that while on company time the forwarding of shall we say anything questionable content-wise (NSF = Not Safe for Work) or otherwise not business related simply must not be forwarded whatsoever. Save those e-mails for the personal account throughout personal time.
For further, I have a write-up with some extra general forwarding tips that affect business and private e-mails alike that you could find helpful: 5 Rules for Forwarding. Why not also take a look at my Copyright Refresher while you are at it?