1. E-Mail
Internal And Working

2. Electronic Mail - Abbreviated as e-mail, email, or eMail, is any method of creating,
transmitting, or storing primarily text-based human communications with digital
communications systems.

4. MUA formats the message in e-mail format and uses the Simple Mail Transfer
Protocol (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 Mail
Exchange Servers accepting messages for that domain.
The DNS Server for the b.org domain, ns.b.org, RESPONDS with an MX Record
listing the mail exchange servers for that domain.
SMTP.a.org sends the message to mx.b.org using SMTP, which delivers it to the
Mailbox of the user bob.
On Pressing the “Get Mail" button in the MUA of second end, it picks up the
message using the Post Office Protocol (POP3).

5. 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 message's recipient[s]
Subject: A brief summary of the contents of the message
Date: The local time and date when the message was written

6. Other common header fields include:
Bcc: Blind Carbon Copy
Cc: Carbon copy
Pros
The problem of Logistics.
The problem of Synchronization.
Cons
Spamming and computer viruses
Loss of Context.
Information Overload.
Inconsistency.

7. E-mail Spoofing - E-mail Spoofing is a kind of Forgery. Mails appear to be sent
from a known sender but they are actually not so.
E-mail Bombing - E-mail Bombing refers to transferring a huge amount of e-mails
to someone, ensuing the victim's e-mail account crash.
E-Mail Etiquette:
Use the subject line
Be brief and concise
Reply quickly
Don't over-punctuate
Don't use all capitals
Minimize abbreviated phrases