This article explains how to send an email to multiple recipients using the Cc and Bcc fields in your email program.
The new Email screen in every email program has a To field where you enter the recipient's name or email address. Many outgoing email screens also show a Cc field, and some show a Bcc field. Whether you see them or not, the Cc and Bcc fields are available in your email provider. You may have to take an extra step to find and display them.
After the fields appear at the top of your email, you can type in as many email addresses as you like, each separated by a comma. Your outgoing email will go to everyone listed in the Cc and Bcc fields, along with everyone in the To field.
If you don't see the Cc and Bcc fields, look for them. Once you enable the fields, they may (depending on your email program) remain in place for every new email you send.