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| Slang term for the standard postal mail service. |
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| A unique numerical address assigned to a computer or device on a network. |
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| Message Transfer Agent (MTA): |
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Definition
| A messaging component that routes, delivers and receives e-mail. |
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| Mail Delivery Agent (MDA): |
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| An e-mail server program that receives sent messages and delivers them to their proper destination mailbox |
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| A unique name or number that identifies you when logging on to a computer system or online service. In an e-mail address, the part before the @ symbol |
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| An e-mail program that is independent of any specific Web browser, and that you can use to send e-mail messages. |
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Definition
| A messaging component used as a stand-alone application by the user. |
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| E-mail programs such as Outlook Express and Opera Mail that come bundled with a Web browser and with which they may be integrated. |
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| Free e-mail service from a provider such as Windows Live Hotmail or Yahoo! in which you request a user name. You can access your e-mail from any computer that has access to the Internet. |
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| Multipurpose Internet Mail Extensions (MIME): |
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Definition
| A protocol that enables operating systems to map file name extensions to corresponding applications. Also used by applications to automatically process files downloaded from the Internet. |
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| A block of Information attached to a piece of data. The first part of a network packet. Can contain network addressing information or additional information that helps computers and applications process data. |
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Definition
| Secure version of MIME that adds encryption to MIME data. |
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| Pretty Good Privacy (PGP): |
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Definition
| A method of encrypting and decrypting e-mail messages. It can also be used to encrypt a digital signature |
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Definition
| An open-source version of PGP, used for encrypting and decrypting e-mail messages, that does not use patented algorithms |
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| A file that is sent with an e-mail message. |
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Definition
| A combination of characters that, when read sideways, helps convey emotion in an e-mail message. |
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Definition
| Unsolicited and Unwanted e-mail messages; the online equivalent of junk mail. |
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| CAPTCHA (Completely Automated Public Turing Test to Tell Computers and Humans Apart): |
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| A test that uses a word-verification graphic designed to differentiate humans from automated senders during online transactions. |
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Definition
| A published list of IP addresses known to be sources of spam. |
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Definition
| An e-mail client program that identifies and filters out spam messages before they reach the e-mail Inbox. |
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| personal information management (PIM) program: |
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Definition
| A tool used to Schedule appointments and meetings, store contact information, and manage tasks. |
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| Personal Digital Assistant (PDA): |
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Definition
| A small, handheld computer used for personal information management. The predecessor to the smartphone. |
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