Glossary of Email Terms

Alias: An alias is an abbreviated URL that differentiates itself from other links, even if they lead to the same website. It helps track which message contained the link that a user clicked. An alias can also be simple text in the body of an email.
Bcc (Blind Carbon Copy): Bcc allows you to send a copy of an email to a recipient without their email address being visible to others. This field is typically found below the primary email address field.
Blacklist: A blacklist includes email addresses or IP addresses of known spammers. It blocks emails at the server level, preventing them from reaching their destination. This method is used to block spam before it reaches the inbox.
Bounces: Bounces refer to messages that fail to reach their intended recipients. There are two types: "hard" bounces due to invalid email addresses, and "soft" bounces due to temporary issues such as a full inbox.
Cc (Carbon Copy): Cc sends a copy of an email to an additional recipient, visible to all other recipients. This field is usually located below the main email address field in email clients.
DNS (Domain Name System): DNS translates domain names into IP addresses, converting human-readable addresses into numerical IP addresses for proper routing.
Domain Name: A domain name identifies one or more IP addresses and consists of at least two parts separated by dots. The second-level domain is the more specific part, while the top-level domain is more general.
Email Harvesting: Email harvesting is the illegal practice of using programs to collect email addresses from web pages for spamming purposes. These programs scan websites to gather and store email addresses.
Email Marketing: Email marketing involves using email lists to send marketing materials to users who have opted in to receive them.
Email Headers: Email headers contain the sender's and recipient's email addresses, along with routing information. They appear at the top of an email and show the path taken by the email.
False Positive: A false positive occurs when legitimate email is mistakenly identified as spam and caught in a spam filter. This issue can recur unless the sender is added to a whitelist.
Helo: Helo is a server's greeting in email communication, now largely replaced by EHLO, which stands for "extended Hello". EHLO provides additional functionality for identifying the server.
Local Host: The local host is the computer directly connected to a user's terminal from which the email originates.
MIME (Multipurpose Internet Mail Extensions): MIME extends email standards to support the exchange of text, audio, and visual files in a single email.
Open Relay: An open relay allows third-party servers to send email messages through a mail server, often exploited by spammers to obscure the source of their emails.
Plain Text: Plain text refers to email messages without any formatting elements, images, or HTML.
POP3 (Post Office Protocol 3): POP3 is a protocol used to retrieve email from a server and deliver it to a mail client.
Proxy: A proxy is a computer system or router that provides anonymity by breaking the direct connection between sender and receiver.
Remailer: A remailer forwards emails anonymously, removing the sender's name and email address.
Reverse DNS Lookup: This process translates an IP address into a domain name.
Sender ID: Sender ID is an authentication protocol used to verify that the originating IP address is authorized to send email for the domain specified in the email's "From" or "Sender" lines.
SMTP (Simple Mail Transfer Protocol): SMTP is a protocol for sending email over the Internet, governing how email servers and clients interact.
Snail Mail: Snail mail refers to traditional postal mail delivered in paper format by postal services.
Soft Bounces: Soft bounces occur when an email fails to deliver due to temporary issues, such as a full inbox, requiring the email to be resent.
Spam: Spam is unsolicited email sent in bulk to many addresses, often multiple times to the same recipient.
Spoofing: Spoofing involves falsifying the sending email address to evade detection and spam filters.
Tracking: Email tracking measures clicks on links and the number of times a webpage is viewed as part of email marketing.
Web Mail: Web mail is an email service primarily accessed through a web browser.
Whitelist: A whitelist includes pre-approved email addresses that can bypass spam filters and be delivered directly.