Webmail is Web browser based and includes support for POP3 and IMAP4. Describe the differences between POP3-based Webmail and IMAP4-based Webmail. Spam is flooding the Internet with many copies of the...

Webmail is Web browser based and includes support for POP3 and IMAP4. Describe the differences between POP3-based Webmail and IMAP4-based Webmail.

Spam is flooding the Internet with many copies of the same e-mail message, in an attempt to force the message on people who would not otherwise choose to receive it. Propose some strategies for fighting spam.