email spam

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Email spam

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Email spam, also known as junk email or unsolicited bulk email (UBE), is a subset of electronic spam involving nearly identical messages sent to numerous recipients by email. Clicking on links in spam email may send users to phishing web sites or sites that are hosting malware. Spam email may also include malware as scripts or other executable file attachments. Definitions of spam usually include the aspects that email is unsolicited and sent in bulk

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Classification of mail

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Spam vs. non-spam: Spam messages are placed in the spam folder, while non-spam message are placed in the inbox. Mail categories: Most users use Gmail's default inbox which further classifies non-spam mail into categories - Primary, Social, Promotions, Updates and Forums. Primary, Social and Promotions are enabled by default, but users can choose to enable or disable from all five to none. The Primary category includes person-to-person conversations and message of Mass email service categories that aren't currently enabled.

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Mail classifications depend heavily on reports from users. Gmail users can mark and unmark messages as spam, and can move non-spam messages between inbox tabs. In both cases Gmail learns from user corrections and over time automatically adjusts the classification to match users’ preferences.

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Spam techniques

Appending:

Appending If a marketer has one database containing names, addresses, and telephone numbers of prospective customers, they can pay to have their database matched against an external database containing bulk email server hosting . The company then has the means to send email to people who have not requested email, which may include people who have deliberately withheld their email address

Image spam:

Image spam Image spam, or Image-based spam, is an obfuscating method in which the text of the message is stored as a GIF or JPEG image and displayed in the email. This prevents text based spam filters from detecting and blocking spam messages. Image spam was reportedly used in the mid 2000s to advertise "pump and dump" stocks

Blank spam:

Blank spam Blank spam can have been sent in a directory harvest attack, a form of dictionary attack for gathering valid addresses from an email service provider. Since the goal in such an attack is to use the bounces to separate invalid addresses from the valid ones, spammers may dispense with most elements of the header and the entire message body, and still accomplish their goals.

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Blank spam may also occur when a spammer forgets or otherwise fails to add the payload when he or she sets up the spam run. Often blank spam headers appear truncated, suggesting that computer glitches may have contributed to this problem—from poorly written spam software to malfunctioning relay servers, or any problems that may truncate header lines from the message body.

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The perils of bulk, uninvited email Sending bulk email marketing puts your email marketing reputation at risk -period. When you send mass emails to people who never asked for them, they're going to hit the spam button. This will get you in trouble with Internet service providers, and at worst, get your email and IP address blacklisted.

The disadvantages of sending bulk email spam::

The disadvantages of sending bulk email spam: Your recipients will be unresponsive You'll waste time sending to an unresponsive audience You'll waste money sending emails to people who don't want them You'll ruin your email marketing reputation You'll ruin the reputation of your company or business You'll see your open and click-through rates drop

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