Explain how email technologies enable the exchange of messages between users

Exchange of email is mentioned below:

1) A user composes a message and sends the email, Sent Email messages and files are uploaded in an outgoing mail server via Simple Mail Transfer Protocol(SMTP).

2) All outgoing messages remain in outgoing mail queue until the SMTP server communicates with the DNS (Domain Name Server).

3) When the SMTP server locates the recipient's email server, Then messages or file attachments will be transferred else; the sender will receive a "Mail Failure" notification.

4) The recipient email client will download all the messages and attachments that were being sent to him by the sender, and it displays a notification of received email in an inbox.

a macro is a tool that allows you to automate tasks and add functionality to your forms, reports, and controls. for example, if you add a command button to a form, you associate the button's onclick event to a macro, and the macro contains the commands that you want the button to perform each time it is clicked.