 Today is Saturday November 23, 2024 in Canada. This is the day that the Lord has made; we will rejoice and be glad in it. (Psalm 118:24) David Spencer's Media Spin Canada provides information on:
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ContentsE-mail (noun) is a piece of information that is exchanged as a digital message through the Internet. E-mail is an abbreviation for electronic mail. Abbreviations include email, e.mail and e-mail. E-mail (verb) is often used as a colloquial expression in conversation. For example, a person may say "Just e-mail me the details of that meeting". "E-mail me" means send me the information as an e-mail message. E-mail systems are based on a store-and-forward model in which e-mail computer server systems accept, forward, deliver and store messages on behalf of users, who only need to connect to the e-mail infrastructure, typically an e-mail server, with a network-enabled device (e.g., a personal computer) for the duration of message submission or retrieval. Originally, e-mail was always transmitted directly from one user's device to another's; nowadays this is rarely the case. Originally a text-only communications medium, e-mail was extended to carry multi-media content attachments, which were standardized in with RFC 2045 through RFC 2049, collectively called, Multipurpose Internet Mail Extensions (MIME). The foundation for today's global Internet e-mail service was created in the early ARPANET and standards for encoding of messages were proposed as early as 1973 (RFC 561). An e-mail sent in the early 1970s looked very similar to one sent on the Internet today. Conversion from the ARPANET to the Internet in the early 1980s produced the core of the current service. Network-based e-mail was initially exchanged on the ARPANET (Advanced Research Projects Agency Network) in extensions to the File Transfer Protocol (FTP), but is today carried by the Simple Mail Transfer Protocol (SMTP), first published as Internet standard 10 (RFC 821) in 1982. In the process of transporting e-mail messages between systems, SMTP communicates delivery parameters using a message envelope separately from the message (headers and body) itself.
E-mail ComponentsAn electronic mail message consists of two components, the message header, and the message body, which is the e-mail's content. The message header contains control information, including:
Spam E-mailSpam e-mail is unsolicited (not asked for) commercial e-mail often sent to numerous e-mail accounts. There are at least two types of spam E-mail.
Pills, porn and poker, the so-called 3 Ps, are the most common forms of business which use e-mail spam and other forms of spamvertising. In many cases, these sites are of dubious legality, and are often fronts for fraud. From the beginning of the Internet (the ARPANET), sending of junk e-mail has been prohibited, enforced by the Terms of Service/Acceptable Use Policy (ToS/AUP) of internet service providers (ISPs) and peer pressure. Even with a thousand users junk e-mail for advertising is not tenable, and with a million users it is not only impractical,[11] but also expensive.[12] It is estimated that spam cost businesses on the order of $100 billion in 2007.[13] As the scale of the spam problem has grown, ISPs and the public have turned to government for relief from spam, which has failed to materialize.[14]
Ham E-mailHam e-mail is a valid and wanted e-mail message sent from your family, friends, membership organizations and or business connections.
False Positive E-mailFalse positive e-mail is a valid and wanted e-mail message that was erroneously classified as a spam e-mail message by an e-mail filtering system.
False Negative E-mailFalse negative e-mail is a spam e-mail message that was erroneously classified as a valid and wanted e-mail message by an e-mail filtering system.
E-mail WhitelistAn e-mail whitelist is a list of contacts that the user deems are acceptable to receive email from and should not be sent to the spam or trash folder on an e-mail client (e-mail software program).
E-mail BlacklistAn e-mail blacklist is a list of contacts that the user deems are acceptable to receive email from and should not be sent to the spam or trash folder on an e-mail client (e-mail software program).
Advantages of Using An E-mail Whitelist and BlacklistSpam filters that come with e-mail clients (e-mail software programs) have both white and black lists of senders and keywords to look for in e-mail messages. If a spam filter keeps a whitelist, e-mail from the listed e-mail addresses, domains, and/or IP address will always be allowed. Using whitelists and blacklists can assist in blocking unwanted messages and allowing wanted messages to get through. However, whitelists and blacklists are not perfect. E-mail whitelists are used to reduce the incidence of false positives, often based on the assumption that most legitimate mail will be from a relatively small and fixed set of senders. To block a high percentage of spam, e-mail filters have to be continuously updated since e-mail spam senders (unscrupulous, unethical people) create new e-mail addresses to send e-mail from or new keywords to use in their e-mail which allows the e-mail to slip through.
References
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From David Spencer's Media Spin : Observations about media in Canada
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