What is an Email Filtering Service?

What is an Email Filtering Service?

What is an Email Filtering Service?

Not all emails are created equal.

Some you want to see. And others you hope to never see as they can clog up your inbox.

That’s where email filtering comes into play.

Beyond keeping your inbox tidy, proper email filtering can increase your productivity and even help keep you safe from potential scams and phishing attacks.

In the below article, we’ll discuss what an email filtering service is exactly. We’ll also share some of the best email filtering solutions available on the market to help narrow your search.

What is an Email Filtering Service?

Email filtering is the process of sorting through email messages and determining which ones are valid and which ones are not. This can be done manually, but most often it is done with the help of software that is designed to automatically filter emails.

There are a number of different criteria that can be used to filter emails, but the most common one is to look for specific keywords or phrases. If an email contains one of these keywords, it will be flagged as being potentially spam. Other criteria that can be used include the sender’s address, the recipient’s address, and the subject line.

Email filtering is a valuable tool for anyone who receives a lot of email, especially if they are not familiar with all of the sender’s addresses. It can also be used to protect against phishing attacks, which are when scammers try to trick people into giving them personal information by pretending to be a legitimate company or individual.

While email filtering can be a helpful way to reduce the amount of spam that you receive, it is important to remember that it is not a perfect solution. Some legitimate emails may be flagged as spam, and some spam messages may slip through the filters. If you are concerned about missing important emails, you may want to consider using an email whitelist instead.

Email Filtering Solutions

While many email hosts and services provide built in spam filtering, there are also a number of third-party solutions that can be used.

Here are some of the best email spam filtering services:



SpamTitan by TitanHQ is a leading email security solution that offers both on-premise and cloud-based filtering. Beyond email filtering, SpamTitan also protects organizations against phishing attacks, viruses, and other malware. It does this by using a built-in secure email gateway to block threats. Additionally, SpamTitan utilizes double antivirus protection with Bitdefender and Clam AV engines.

There are a wide variety of features packaged into SpamTitan. Their solution includes whitelisting and blacklisting, plus it comes with email scanning technology to protect users from real-time phishing attempts. They also watch your outbound emails to help prevent data loss and blacklisting. Users can easily view reports on email activity and manage their account through a central web-based interface.

One thing that we love about SpamTitan is how easy it is to setup and use. It’s a great solution, especially if you are Microsoft based and use Office 365.



Mimecast is an email security company that provides a number of services to protect email from threats such as spam, malware, and phishing. The company’s services include email filtering, archiving, and encryption.

Mimecast also offers a cloud-based email security service that provides real-time protection from email-borne threats. In addition, Mimecast offers a variety of training and awareness services to help organizations prevent emails from being compromised by malicious actors.

Proofpoint Essentials


As one of the largest email security companies in the world, Proofpoint helps protect over 100,000 companies across the globe from malicious emails.

Their Secure Email Gateway, which is geared for small and midsized businesses, uses email filtering to weed out spam, malware, and other potentially malicious communications. Beyond email filtering, the platform is also great for administrators looking to implement tighter control mechanism on emails; it includes great tools like encryption and archiving.

One of the most impressive things about Proofpoint Essentials is its reliability. Third-party testing companies, including SE Labs have reported that Proofpoint has a 98% overall accuracy rating. This means that more of the right emails make it past their quarantine, and less of the junk makes it into your inbox. This decreases clutter and adds bonus security, promoting more positive communications and overall productivity in organizations.

Barracuda Essentials

Barracuda Essentials

In the ocean, barracudas are fearsome, large predatory tropical marine fish. But in the cyber and email security world, Barracuda is known as a powerhouse company with more than 200,000 global customers that use their solutions to safeguard employees, data, and applications from a wide range of threats.

With Barracuda Essentials, companies can rest assured when it comes to email because they are protected against 13 email threat types. This provides a comprehensive defense that protects businesses from more than just spam. Their system is even built to detect social engineering attacks like spear phishing and account takeover.

Some things that set Barracuda Essentials apart from the competition include real-time detection for dynamic threat analysis, link protection, Outlook plug-ins and mobile apps, and a centralized cloud management console.  They also use an Advanced Threat Protection (ATP) technology which combines behavioral, heuristic, and sandboxing technologies to protect against zero hour, targeted attacks and ransomware variants like Locky and CryptoLocker.