निम्नलिखित में से कौन सा एक ईमेल पते (email address) का अनिवार्य संरचनात्मक हिस्सा नहीं है?

Junk e-mail is also referred to as:

When you use the Reply function on an email message, who receives your response?

Which of the following in an email message allows the sender to hide the person entered in the Bcc field from other recipients? (i) BCC (ii) CC (iii) TO (iv) FROM