How do you do manually add recipients when writing an email?
If there is a name in the To field (or the CC or BCC fields) to whom you don't wish to
send, backspace out that name.
(Selecting "blank entry" prior to clicking Send and Write will provide a blank To
field automatically.)
In the blank field area type in the email address you are sending to. Use the format of
zed@zyxo.com
If you have several addresses separate them by commas as: