Electronic Mail - Abbreviated as e-mail, email, or eMail, is any method of creating,transmitting, or storing primarily text-based human communications with digitalcommunications systems.
MUA formats the message in e-mail format and uses the Simple Mail TransferProtocol (SMTP) to send the message to the local Mail Transfer Agent (MTA).The MTA looks up this domain name in the Domain Name System to find the MailExchange Servers accepting messages for that domain.The DNS Server for the b.org domain, ns.b.org, RESPONDS with an MX Recordlisting the mail exchange servers for that domain.SMTP.a.org sends the message to mx.b.org using SMTP, which delivers it to theMailbox of the user bob.On Pressing the “Get Mail" button in the MUA of second end, it picks up themessage using the Post Office Protocol (POP3).
Internet e-mail messages consist of two major sections:• Header — Structured into fields such as summary, sender, receiver, and other information about the e-mail• Body — The message itself as unstructured TEXT, sometimes containing a signature block at the end.• The Message Header usually includes at least the following Fields: From: The e-mail address, and optionally the name of the sender To: The e-mail address[es], and optionally name[s] of the messages recipient[s] Subject: A brief summary of the contents of the message Date: The local time and date when the message was written
Other common header fields include:Bcc: Blind Carbon CopyCc: Carbon copyProsThe problem of Logistics.The problem of Synchronization.ConsSpamming and computer virusesLoss of Context.Information Overload.Inconsistency.
E-mail Spoofing - E-mail Spoofing is a kind of Forgery. Mails appear to be sentfrom a known sender but they are actually not so.E-mail Bombing - E-mail Bombing refers to transferring a huge amount of e-mailsto someone, ensuing the victims e-mail account crash.E-Mail Etiquette:Use the subject lineBe brief and conciseReply quicklyDont over-punctuateDont use all capitalsMinimize abbreviated phrases