Anti-spam techniques and devices

The filtering considers undesirable messages with suspicious technical or editorial characteristics

With regard to e-mail traffic consisting of more than 90% of spam, ISPs and webmails have developed over the years many message filtering technologies that reach their subscribers' inboxes. These anti-spam devices are based on technical elements, on a content analysis and on the reputation of the sender to decide whether or not to deliver the email. It is therefore important to know the main factors in order to avoid catastrophic errors in the efficiency and profitability of the routing.

Anti-spam devices based on technical elements

To ensure a fast processing of incoming e-mails, anti-spam filtering is triggered as soon as inconsistencies are detected in the emailing. The membership of the sending IPs to one of the industry blacklists or an emailing pace too fast result in a pre-emptive "blacklisting" of the issuer. These automatic barriers combine with historical data from previous campaigns, such as the number of complaints and manual spam reporting by recipients.

Anti-spam devices linked to content and sender

In addition to this first filtering process, the anti-spam tries to qualify the content and the reputation of the sender of the emailing.

The analysis includes the presence in the subject or in the body of the text of words commonly associated with spam and the coding quality of the mailing, for example in HTML markup. Others test may concern the variety of the lexical field as well as the explicit identification of the sender.

Manage anti-spam at network levels, condition of success of your emailing

Managing your mailing base will make a difference in the quality of your mailings. The network May block you if too many emails have been rejected, returned or deleted.

Carefully compose the content of your emailing, this is protection against anti-spam

What vocabulary choose not to be automatically considered spam? The content of your mailings is essential to go through this obligatory passage.

What vocabulary choose not to be automatically considered spam? The content of your mailings is essential to go through this obligatory passage.

Avoid anti-spam during an email campaign, the importance of the sender

We can never say it enough, the e-reputation of the sender is primordial on the web. Not only for the success of your campaigns, but also and especially to avoid blocking because of spamming.