Challenger

ADeleting E-mail from mail box

BLogin to an existing E-mail account

CCreating a new E-mail account

DComposing a new E-mail account

Explanation:

Electronic mail (e-mail) is a computer-based application for the exchange of messages between users. A worldwide e-mail network allows people to exchange e-mail messages very quickly. E-mail is the electronic equivalent of a letter, but with advantages in timeliness and flexibility. It is a fast way to communicate as it reaches the people residing in even far off countries in minutes. It is convenient to send an email as the same message can be sent to many people. Raymond Samuel Tomlinson is the father of e-mail. Software for e-mailing is e-mail client •An email client is a software application that is used to access, manage, and send emails. It provides users with a user interface that allows them to view and organize their email message. Popular email clients include Microsoft Outlook, Mozilla Thunderbird, macOS Mail, Mailbox and iOS Mail.