If you are planning to forward a forwarded letter to multiple recipients, here is how it is done.
On the forwarded email that you received, click ‘Forward…As Inline Text’.
A new email page will open for you to edit the email. Delete all the addresses shown on the ‘CC’ and ‘BCC’ field.
You may also edit the body of the email if you want.
When you are ready to insert addresses, to add an entry in the ‘Cc:’ and ‘Bcc:’ fields, click the "Show Cc: and Bcc:" link to the right of the "To:" field.
Click ‘Contacts’…to open your Address Book.
Click at the contact name you want to be ‘Cc’d’
(Cc: stands for "carbon copy." Anyone listed in the Cc: field of a message receives a copy of that message when you send it. All other recipients of that message can see that the person you designated as a Cc: recipient has received a copy of the message.)
Click at the contact name you want to be ‘Bcc’d’.
(Bcc: stands for "blind carbon copy." This is similar to the Cc: feature, except that Bcc: recipients are invisible to all the other recipients of the message (including other Bcc: recipients).
For example, if you send a message To: email@example.com and Bcc: firstname.lastname@example.org, then johndoe sees himself as the message's only recipient. Janedoe, on the other hand, is "in the know"—she can see that you sent the message To: johndoe, and that you blind-copied her.)
Note: To send a message, you must always specify at least one recipient in the "To:" field.
If you don't, an error message appears when you attempt to send the message.