ASP is an abbreviation for Application Service Provider. It is a company that provides hosting service or online outsourcing to particular applications by means of HTTP.

Attachment - is a file ( image, text, music or video) that is sent with email message.
Auto-responder – an application that sends out automatic responses (containing text written in advance) to emails.
Blacklists contain a list of IP addresses that are accused of spam sending. There are public and private blacklists. Public blacklists are maintained by third parties. Private blacklists are created by ISP to block emails delivery. The blacklists can be checked at www.openrbl.org and www.dnsstuff.com.

Bounce - a message that wasn't delivered promptly and sent back to sender. There are more than 20 reasons why email message can be bounced. Some of them are: email address invalid or doesn't exist, email address has been closed, the mailbox is full, the server is down, etc.

Click-through - means that the recipient clicks an URL link included in an email.

Click-through Tracking - is the data gathered about click-through links: how many people clicked it, what clicks resulted in a subscription, purchase or conversion.

Click-through Rate - percentage of visitors that click an URL. To calculate the click-through rate, divide the number of click-throughs by the number of delivered emails and multiply it by 100.

Double Opt-in requires a list subscription performed in two steps: singing up and visiting a confirmation page to confirm subscription.

Dynamic Content means email message content that changes automatically. The changes are based on the user information, may reflect previous purchases, interests or address.

Email Client is the software which is used to send read, and retrieve email. The examples are Outlook Express, and Eudora.

Email Filter is an email application that blocks incoming email according to the predetermined criteria such as sender’s email, the header or content. Filters may also be applied at the email client, the ISP or a combination.

Email Harvesting: a process of collecting email addresses from the Web pages. The email addresses are collected by a special program. Since the addresses are sold to spammers, harvesting is forbidden by laws in many countries.

Email List Management Software is an email application that allows users to import, export, and manage their contact lists.

Email Newsletter is a message containing specific information and is distributed to the subscribers via email. Usually email newsletters represent a sales offer.

E-mail Newsletter Advertising implies purchasing ad space in the body of email newsletters.

Event Triggered Email - automatic emails sent to the recipients on some specific events.

Firewall – software intended to restrict access by unauthorized users to a private network.

Footer is located at the bottom of an email message. Usually it contains unchangeable information, such as contacts, postal address and so on.

Forward to a Friend is a link in the email newsletter which encourages the people to share your message with their friends.

FTP stands for File Transfer Protocol. This standard protocol is used for transferring files throughout the local system, or between computers and the Internet.

IMAP stands for Internet Mail Access Protocol. IMAP is used to retrieve messages from an email server.

IP Address is an address that consists of 4 sequences of digits (between 0 and 255) separated by dots. IP address is used to specify a location for the TCP/IP protocol.

ISP – stands for Internet Service Provider, a company that offers various Internet services, such as Web hosting, email, FTP hosting, and other.

Mail Server is a server which is used to send, receive and store email.