Using Anti-Spam Software
It wasn't that long ago that email inboxes were clogged with so much junk mail and spam that it threatened to make electronic communication completely ineffective. As soon as you opened your email, you were inundated with badly written adverts for items such as $ex, V!agra, and a large number of other products whose names had been purposefully misspelled in order to circumvent any spam filtering systems. People who were concerned in consumer protection were aware that the ultimate aim was to get rid of and prevent spam, but as soon as they developed a product that was intended to achieve exactly that, spammers found new ways to circumvent their efforts by becoming more inventive. That is, prior to the development of contemporary anti-spam tools. Antispam software may take many different shapes, all of which have the same overarching goal: to prevent unsolicited emails from reaching their intended recipient.
Blacklist
The practice of blacklisting spammers is one of the key anti-spam tactics. This program first detects the Internet Protocol (IP) address of the sender of the spam, then contacts the Internet Service Provider (ISP) of the sender and requests the ISP to block mail from the identified sender's IP address to your email account. In principle, this is a solution that can't possibly fail. However, the fact is that there is a lot of money to be earned in spamming, and because of this, requiring a spammer to modify his IP address regularly in order to avoid being blocked is not an excessively high price to pay. In spite of this, the use of this approach does, over the course of time, begin to shut doors in spammers' faces, and it almost eliminates amateur spammers who do not have the capacity to move IPs on a regular basis.
Spam Votes
This gadget will be known to a great number of people, particularly those who make regular use of their email accounts. Users are required to participate in order for the spam voting program to function properly. When you get an email, you have the option of labeling it as spam. This is often accomplished by pressing a button that, not surprisingly, is labeled with the word "spam." When a sufficient number of users label an item of email or an IP address as spam, that item or IP gradually loses confidence until it is eventually totally barred from addressing.
Profiling
Learning the common traits shared by spammers and spam mail is part of the profiling process. It is software that scans incoming messages for characteristics such as defects, invalid message IDs, and other characteristics, and then utilizes these qualities to make judgments about the messages. After that, a score is assigned to each item of mail based on how it performs in comparison to these standards. The user is then presented with the choice of deciding how high or how low the bar should be set in terms of which emails are permitted to enter. It has been shown that this strategy is quite successful against spammers of all skill levels, including many professional spammers. However, it depends on a ready team of specialists to detect new characteristics utilized by spammers and to add those characteristics into the profiling algorithms. This staff must be readily available.
Bayesian Filtering
The most promising program for preventing spam does not abide by any rules. Instead, it continually learns new ways to combat spam by scanning the e-mails you've read and comparing them to the e-mails you've rejected. This is how it learns these new methods. This very advanced piece of software analyzes the information that it gathers from thousands of users in order to determine which things are spam and which are not. After that, it is able to modify its criteria in accordance with the specific preferences you have provided. After some period of time, it will become proficient at just giving you the emails that you want and blocking the emails that you do not want.