Bcc stands for "blind carbon copy," and is a way of sending emails to multiple people without them knowing who else is getting the email. Any email addresses in the Bcc field will be invisible to everyone else on the email. In other words, it's like cc, but for spies.

Can I send Bcc without TO?

You can put any addresses you like in the “To” or “Cc” fields along with any you put in the “Bcc” field. Just remember that only the addresses in the “Bcc” field are hidden from recipients. You can also leave the “To” or “Cc” fields blank and just sent the message to the addresses in the “Bcc” field.

Can you put all recipients in Bcc?

BCC – Undisclosed Recipients

The BCC stands for Blind Carbon Copy. That means no one can see who the email is going to. When you send the message, it will be sent to all of the people in your BCC. You should receive the same email in your inbox as well.