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    Resource Saving: An e-mail does not require paper, envelope
                          or stamp. It is  digital in nature.  So, the wastage  of natural
                          resources is minimum.

                                                            Maintenance of Record: The sender or the receiver can
                                                             always keep the records of the messages in the section of

                                                             the mailbox or on the computer as a soft copy.

                          Reusable: The e-mail messages can be reused or forwarded to

                          other recipients as and when required.

                      Limitations of an Email

                           Although emails are delivered instantly, the recipient may or may not read the mail at that
                          moment. This defeats the purpose of the quickness of an electronic mailing system.
                           Most of the websites display advertisements during the usage which are called spam mails.
                          There are many spams that are sent to the e-mail accounts. It results in the increased size of

                          the mail box, which brings a significant decrease in the speed of usage and consumes extra
                          time of a user who has to navigate through all the mails to search for the required one.
                           A slight error in the address of the recipient may result in the non-delivery of the message
                          or delivery to some other recipient.

                           Since e-mail passes through various networks, sometimes it may be intercepted in between.
                          A failure or fault in one of the links (of network) between the sender and receiver prevents
                          delivery of the e-mail, though the sender assumes that e-mail has been delivered.

                      E-mail Services

                      There are two kinds of e-mail services viz. web-based and application-based.

                      Webmail

                      Webmail or web-based e-mail, is portable and accessible from any Internet-enabled web browser.
                      In such a setup, e-mail is accessed on a website. Some of the popular webmail are Gmail, Yahoo,
                      Roundcube, SquirrelMail, etc. Some of the advantages of using webmail are:

                          No need to install specific software for accessing e-mail
                           Saves storage space on the computer as the e-mail is stored online

                      Email Applications

                      An e-mail application is a dedicated application software installed on a computer or mobile
                      device that is used to access services related to e-mail. This application enables the user to store
                      e-mail messages on the storage device of a computer or mobile.

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