E-MAIL

E-mail stands for ELECTRONIC MAIL. E-mail is one of the facilities or the application of the most widely used Internet. This is because e-mail is a communication tool that is cheap and quick. By e-mail we can contact anyone who is connected to the internet around the world with a fairly low cost. E-mail is to aim only for a moment just after we send it. 

As the name implies, e-mail sent electronically. This causes the e-mail that we send can be copied easily so that we can send e-mails to many people at once. In addition, we also can send files such as documents, images, programs, and so forth along with the e-mails that we send.
There are three types of e-mails that are currently used, among others: POP mail, E-mail-based WEB (Web-based mail), and E-mail forwarding. Each type of e-mail will be described one by one the following advantages and disadvantages. 

1. POP Mail

    Pop Mail is an e-mail received through Internet Service Providers who become our customers. Excess POP Mail is an e-mail of this type can be read in the offline (not connected to the internet). Checking e-mail can be done by connecting the computer to the Internet, then download the e-mail us, then broke with the Internet. After that we can read one by one e-mail we have received. When you're done creating the reply, we can then connect again to the internet and send e-mail replies we receive. To be able to do so, we must have a mail client program such as Eudora or Microsoft Outlook Express. Lack of POP Mail is that we can not open e-mail from any place. 

2. WEB-Based E-mail (Web Based Mail)

    E-mail is a web-based e-mail service offered by service providers websites e-mail service, such as Yahoo!!, Hotmail, plasa.com, etc. E-mail service of this type are usually provided free of charge by the website in question. The advantages of e-mails are usually provided free of charge. Additionally we can check your e-mail from anywhere. Lack of e-mails of this type are we just going to read your e-mail in the online condition requiring connection to the internet cost is greater. 

3. E-mail Forwarding

    E-mail Forwarding is the e-mail service that forwards e-mail in the receipt to your e-mail us the other. E-mail of this type useful for people who like change, change your e-mail. The good news is we can hide your e-mail address is real. In addition, if we change their e-mail address, we do not need to tell your e-mail new, we simply provide an e-mail forwarding address it. Lack of e-mails of this type is due merely an intermediary and shall forward the e-mail messages to another address, e-mail takes longer to get to the e-mail address is real. 

E-Mail Protocol (POP3, IMAP, SMTP) 

Protocol is of a standard method used at each end of the communication channel, in order to convey information correctly. SMTP, POP, and IMAP are protocols TCP / IP used in sending the email. 

SMTP (Simple Mail Transfer Protocol). This protocol is used for sending email using email client application through IP network (Outlook Express, Eudora, Thunderbird), with the identity of port 25 (Note to gmail its standard port 465 or 587 should be with TLS).

POP (Post Office Protocol), more popularly known as POP3. This protocol used by email client applications to download 'download' email from the mail server using the TCP / IP. The workings of this protocol is men'download 'emails, delete emails from the mail server. so the process of reading email on email client application done offline. identity of this protocol is port 110 (Note to the standard gmail using SSL port 995).

 IMAP (Internet Message Access Protocol). This protocol similar to POP protocol (the same protocol to download emails jamming), the advantages of this protocol compared with POP, IMAP allows email remain in the mail server. Identity protocol port 143.