The email addresses or domains on a blacklist are automatically marked as spam in the inbox.
What is an email address?
A virtual address, which is unique in case of each individual and cannot be replicated for the purpose of sending and receiving mails and attachments, is known as an email address.
Hence, option A holds true regarding an email address.
Learn more about an email address here:
https://brainly.com/question/14714969
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