Don’t forward emails that say to do so–no matter how noble the cause may be. Most are hoaxes or hooey and may not be appreciated by those you send to.
If someone asks you to refrain from forwarding emails they have that right and you shouldn’t get mad or take it personally.
When forwarding email, if you cannot take the time to type a personal comment to the person you are forwarding to–then don’t bother.
Don’t forward anything without editing out all the forwarding >>>>, other email addresses, headers and commentary from all the other forwarders.
If you must forward to more than one person, put your email address in the TO: field and all the others you are sending to in the BCc: field to protect their email address from being published to those they do not know. This is a serious privacy issue!
Be careful when forwarding email on political or controversial issues. The recipient may not appreciate your POV.