--- title: "Online Spam Filtering Is One Of The Best Methods To Tackle Spam Emails | DuoCircle" description: "Join the thousands of organizations that use DuoCircle Find out how affordable it is for your organization today and be pleasantly surprised.Interested in" image: "https://www.duocircle.com/images/og-default.png" canonical: "https://www.duocircle.com/content/cloud-spam-filters/online-spam-filtering/" --- Content # Online Spam Filtering Is One Of The Best Methods To Tackle Spam Emails Join the thousands of organizations that use DuoCircle Find out how affordable it is for your organization today and be pleasantly surprised.Interested in [ Talk to an Expert → ](/contact/) [ See what we make ](/products/) ## Online Spam Filtering Is One Of The Best Methods To Tackle Spam Emails [Spam Filtering - Sign Up](/email/spam-filtering) With emails becoming the primary source of communication, one has to be prepared to take the rough along with the smooth. The rough, in this case, is the _spam emails that keep flooding our mail inboxes from time to time_. The best way to tackle these spam emails is to have **email spam filters** installed in the system. Online spam filtering is also an effective way to deal with such issues. Let us see the different kinds of [spam filtering solutions](/content/cloud-spam-filters/spam-filtering-solutions) and understand the benefits of online spam filtering. ![cloud spam filter](https://media.mailhop.org/duocircle/images/2020/07/cloud-spam-filtering-service.png) ### What Is Online Spam Filtering? _Online spam filtering is a security process that halts spam email in its tracks_. It diverts them to a distinctive email inbox. Thus, it prevents your regular email inbox from clogging with unwanted emails. This process [helps the business](https://docs.microsoft.com/en-us/exchange/benefits-of-anti-spam-features-in-exchange-online-protection-over-exchange-server-2013-exchange-2013-help) organizations to concentrate on their business emails while protecting their networks from **malicious attacks** at the same time. ### What Is Need For Online Spam Filtering? _One should understand that all inbound email is not spam_. Secondly, all spam emails are not necessarily harmful. These messages could be innocent marketing emails that almost every business enterprise indulges in as part of their sales promotional campaigns. However, _spam emails can contain malicious content that could go on to harm the networks on which the businesses work_. Employees could also unwittingly open such malicious emails and click on the links, thereby resulting in **compromising of confidential information**. _[Inbound spam filtering](/content/cloud-spam-filters/inbound-spam-filtering) solutions can help in isolating such spam emails and block such spam from entering the system_. One can have spam filtering solutions on-premise as well as on the cloud. Both can function as online spam filtering solutions. ![email spam filter](https://media.mailhop.org/duocircle/images/2020/07/email-spam-filter-service.png)![spam filtering solutions](https://media.mailhop.org/duocircle/images/2020/07/advanced-spam-filtering.png) ### What Are The Different Types Of Online Spam Filtering Solutions? #### On-premise email spam filters These **spam filters** are installed on the servers of the business enterprise’s network. They act as an _additional firewall to prevent the spam emails from crowding the inbox_. These filters identify spam emails in various ways that we shall discuss later on in this article. #### Cloud Spam filter As the name suggests, the [cloud spam filter](/content/cloud-spam-filters) functions from a cloud-based infrastructure. _The cloud spam filter is a cost-effective spam filtering solution_. Secondly, it is a scalable method of blocking malicious spam emails that do not require the installation of expensive software solutions on the business organization’s network. The [antispam cloud](/content/cloud-spam-filters/anti-spam-cloud) filter is a useful online spam filtering solution. _One can look at various [cloud spam filter pricing](/content/cloud-spam-filters/cloud-spam-filter-pricing) options before deciding on the ideal antispam cloud filter for the organization_. #### Spam filters provided by ISPs or Email Service Providers _Many internet or email service providers offer high-quality spam filtering solutions to their subscribers_. One of the [best enterprise spam filters](/content/cloud-spam-filters/best-enterprise-spam-filter) is the **Gmail spam filter** that ensures to dispatch every spam email into a separate inbox. _The best aspect of this spam filter is that it allows the user to retrieve this email inbox and check out whether the concerned email is spam or not_. They can also proceed to whitelist such email addresses to ensure that emails from such senders do not reach the spam email inbox again. ### How Exactly Do Spam Filters Achieve Online Spam Filtering? Usually, email spam filters do online spam filtering in the following four ways. - **Header spam filters** – Such email spam filters examine the email headers and _inspect the source of the email to look for suspicious information_. - **Content spam filters** – These filters go through the _content of the email message and search for malicious content in the language of the communication_. They can also identify the spam emails from the embedded links in the email content or check out the attachments for malicious items. - **Blacklist filters** – This method of online spam filtering blocks emails that come from a blacklisted or suspicious IP address. _It is one of the handy ways to deal with spam emails_. Some of the advanced email spam filters can check the IP reputation of the sender, as well. - **Rules-based filters** – Not all business entities have the same criteria for identifying spam emails. Therefore, _many businesses opt for installing rules-based filters that apply customized rules to determine spam emails_. The organization specifies these rules to exclude emails from specific senders. They can also program the system to prevent emails containing particular trigger words in their header or body from entering the system _Cybercriminals try out every trick in the book to infiltrate network systems all over the world and steal data_. One of the common ways to do it is **phishing**. This method involves using emails to send malicious content in the form of links or attachments. Business organizations should tackle such attempts by installing [email spam filters](/content/cloud-spam-filters/email-spam-filters) or use online spam filtering to isolate such spam emails. _Various cloud spam filters are available that can help block such malicious emails and thereby protect the businesses from harm_. ![antispam cloud](https://media.mailhop.org/duocircle/images/2020/07/gateway-spam.png) ##### Join the thousands of organizations that use DuoCircle --- Find out how affordable it is for your organization today and be pleasantly surprised. [Spam Filtering - Sign Up](/email/spam-filtering)Interested in our Partner Program for MSPs and VARs? Visit Our [MSP Partner Program](/msp-partner-program). ## Ready to talk? Same-day response from someone technical. We tell you yes or no quickly. If yes, we get to work. 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