Top Free Cloud Email Security Software

Check out our list of free Cloud Email Security Software. Products featured on this list are the ones that offer a free trial version. As with most free versions, there are limitations, typically time or features.

If you'd like to see more products and to evaluate additional feature options, compare all Cloud Email Security Software to ensure you get the right product.

Results: 12
(158)4.8 out of 5
Optimized for quick response

Avanan catches the advanced attacks that evade default and advanced security tools. Its invisible, multi-layer security enables full-suite protection for cloud collaboration solutions such as Office 365™, G-Suite™, and Slack™. The platform deploys in one click via API to prevent Business Email Compromise and block phishing, malware, data leakage, account takeover, and shadow IT across the enterprise. Avanan replaces the need for multiple tools to secure the entire cloud collaboration suite.

Biggest selling point was true API integration into our O365 tenant, protecting not only email but Sharepoint, Teams, etc. During the demo I felt... Read review
Ron F.
Simplicity of installation and ease of use across enterprise Read review
(171)4.6 out of 5
Entry Level Price:$1 PUPM

SpamTitan Email Security identifies and prevents email spam, viruses via email, malware, malicious links, phishing attacks, spoofing and other email borne malicious threats. We provide advanced email security for your business or msp without making it complicated. Inbound and outbound scanning with AI driven real time threat intelligence. SpamTitan Email Security is built for the SMB and SME markets, businesses using Office 365, managed service providers and the education sector. Email Securi

Mainly what would stand out most: Relationship quality price. Read review
The user portal works well, the interface for configurations work ok. Support is mediocre at best. Read review
(51)4.3 out of 5
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SolarWinds® Mail Assure's cloud-based email security helps you and your customers stay in control and protect inbound and outbound email using collective threat intelligence, 24/7 email continuity, and long-term email archiving. Proprietary filtering technology incorporates input from processing large volumes of email data that feed into our Intelligent Protection and Filtering engine. This, combined with real-time pattern threat recognition and machine learning technology, helps protect users

The main SolarWinds MSP Mail Assure advantage over its competitors is the price for this product. Read review
It's priced really well compared to a lot of the competition and cuts out a lot of complicated features that many users simply do not need Read review
(24)4.6 out of 5

The Area 1 Horizon anti-phishing service provides preemptive and comprehensive protection from phishing attacks. The service is the first and only performance-based security service in the industry and deploys in minutes to detect and block phishing emails, malicious links, and network command-and-control traffic that other security technologies miss.

Area 1 does a great job and understanding the difference between phishing and BEC use cases and breaking them out and filtering them from user... Read review
Their pay per phish cost model turns implementation into low risk. We installed it behind our existing spam/phish filter with the understanding it... Read review
(32)4.5 out of 5
Optimized for quick response
Entry Level Price:$150/yr For 5 users

Security Gateway protects all email platforms including Microsoft Exchange, Office 365, and others. Let our team of email security experts take the headache out of managing your company's email security needs. Security Gateway uses the latest email threat detection technology and policy enforcement tools to keep good emails flowing to and from your users. Security Gateway can be deployed as an on-premise solution, or our cloud service can be deployed quickly and easily, allowing you to focus on

- Ease of deployment and Setup - The comfort of using and sending emails without considering any possible threat - Anti Spam and filtration... Read review
Tim K.
SecurityGateway is a great product for multiple domains. We are a small service provider who hosts are number of email domains for our clients. We... Read review
(26)4.7 out of 5
Optimized for quick response
Entry Level Price:$275 Up to 500 User/month

Phish Protection Email Security with Advanced Threat Protection, is a cloud-based email protection suite for your businesses - that stops phishing attacks, malware, ransomware, viruses via email, malicious links, fraud, spam, spoofing and other malicious threats over email - all in real-time, and without the need to install any expensive tools or software.

I do enjoy its simplicity and the pricing. For smaller companies this is a bargain for everything you get. But by far the one thing that did bring... Read review
What we love the most is the ease of deployment. You simply point your MX records to DuoCircle and that's it, filtering begins immediately. ... Read review
(21)4.9 out of 5
Entry Level Price:$1 Per User per month

odix - a market leader in Enterprise CDR (Content Disarm and Reconstruction), is now offering FileWall, a native cybersecurity application for Microsoft Office 365 mailboxes for SMEs. FileWall™ is designed to run in conjunction with existing Microsoft security solutions such as EOP and ATP, ensuring complete prevention against unknown attacks delivered via email attachments. FileWall™ doesn’t harm/change any of Microsoft sender related security capabilities.

Krste K.
FileWall providers enterprise grade protection all within a few clicks to install. It allow us to take control of our email security policies and... Read review
Levan K.
It is really easy to configure, user-friendly environment, easy to setup users and global policies, very easy to manage and for users to see if... Read review
(8)4.6 out of 5

Zerospam is the only cloud-based email security protection providing an unparalleled, AI-powered filtering technology, engineered by experts to be highly accurate and remarkably simple to use. The Zerospam solution was created for small and medium businesses and enterprise customers across North America and beyond because we care about your safety in an era of unprecedented cyber risk to your #1 communication method.

The administration does all the truly difficult work at a small amount of the cost of contending administrations. Incredibly low false positive... Read review
Luis J.
It offers a service that protects emails by providing security as effective as cloud services protecting it from loss of information by third... Read review
(3)5.0 out of 5
Optimized for quick response

Hornetsecurity 365 Total Protection was specially developed to secure the Microsoft 365 business environment with comprehensive protection for all 365 cloud services—including Microsoft Office 365 and Microsoft Outlook 365 email. Hornetsecurity offers two packages to meet your organization’s needs: 365 Total Protection Business—a complete security solution for Microsoft 365 customers. 365 Total Protection Enterprise—adds enhanced features and advanced protection mechanisms. With onboarding

I like that it includes all the email management tools that you need in one console: Filtering, Encryption, Signature/Disclaimer, ATP, Continuity... Read review
Steven P.
Implementation was very easy. It took just a few moments and almost no tweaking involved during the initial setup. It has been very effective... Read review
(2)4.8 out of 5

Complete B2B cloud security, compliance and phishing prevention across all popular B2B chat, email, collaboration and file sharing software. This SaaS offering solves the growing and costly enterprise problem of both collaboration and email security. The 2-year-old company based in San Jose, California uniquely addresses application and email security threat vectors by integrating machine learning and AI with a Zero-Trust Inbox and Zero-Trust Collaboration security product. Clearedin delivers

We are always looking for tools to improve our security framework, and Clearedin provided a cost effective and straightforward implementation to... Read review
(1)0.0 out of 5

ePrism, part of EdgeWave’s Email Security Platform, is a comprehensive email security gateway. It provides unrivaled email defense against internal and external threats such as spam, viruses, spyware, phishing schemes, identity theft, and other dangerous or offensive content. Our services include industry leading inbound/outbound spam and antivirus filtering, category based policy and automated seamless directory integration in a hosted SaaS solution that can be provisioned immediately, without

Michael Z.
There are so many features that I like. The integrated portal allows for management of our service, integrated help and accessing the support... Read review
0 ratings
Entry Level Price:$7 User/month

Our Advanced Email Security combines cutting edge threat prevention with the speed, scale and flexibility of the cloud. We’ve built in multiple scanning engines and threat intelligence for enhanced protection against known attacks like phishing, spam and commodity malware. For advanced threats, we’ve invented the first technology to combine hardware visibility with software agility to see what leading solutions miss. Propriety software algorithms x-ray code at the CPU-level to intercept attacks

Top 10 Free Cloud Email Security Software in 2021

  • Avanan Cloud Email Security
  • SpamTitan Email Security
  • SolarWinds Mail Assure
  • Area 1 Security
  • Security Gateway

Learn More About Cloud Email Security Software

What You Should Know About Cloud Email Security Software

Using cloud email security software, companies can protect their systems from unwanted emails or malicious email threats. Cloud email security software tools detect and quarantine unwanted emails including those containing spam and bulk emails; malware, ransomware, spyware, and other viruses in malicious links or attachments; phishing and spear-phishing attempts; C-level executive impersonation attacks; advanced targeted attacks; and more. Cloud email security software may also provide other features such as email archiving, email encryption, and data loss prevention functions for outgoing email.

Cloud email security software shares similarities with secure email gateways, which are designed to protect on-premises email. Cloud email security software, alternatively, is designed to protect cloud-based email environments and does not require on-premises hardware installations.

Key Benefits of Cloud Email Security Software

  • Offer a cloud-based, rather than on-premises, email security solution
  • Include anti-spam, anti-malware, and anti-phishing capabilities
  • Detect and quarantine suspicious emails, including links and attachments

Why Use Cloud Email Security Software?

Cloud email security software helps companies protect their cloud-based email communications. Email is one of the most commonly used points of entry hackers use to gain access to corporate systems or to trick recipients into divulging sensitive information; often, these attacks lead to information or financial losses and reputational damage. Cloud email security software protects against email-focused attacks by blocking or quarantining suspicious emails. Given many companies have migrated from on-premises to cloud-based email solutions, the tools to secure their email need to evolve to face new threats emerging every day.

In particular, cloud email security software protects against spam, malware, and phishing attacks. Malware attacks, which often originate from emails with malicious links or attachments that unsuspecting users click or open. Malware can include ransomware, spyware, or other viruses. Ransomware encrypts company files and demands a random to decrypt them. Spyware usually sits silently on company systems stealing sensitive information such as intellectual property or trade secrets. Other viruses seek to embarrass companies and can damage a company’s brand and reputation. For example, a virus that sends an email to all of the user’s contacts, would fall in this category.

Cloud email security software also protects against social-engineering attacks such as phishing, spear-phishing, and c-level executive impersonation attacks. Phishing attacks are emails sent in bulk aiming to get employees to divulge information, such as sensitive financial information. Spear-phishing is a type of phishing that is targeted to a specific individual; in spear-phishing attacks, hackers spend time getting to know the targeted employee’s habits and preferences in order to send a personalized malicious email. The newest kind of phishing attacks are known as “impersonation attacks," which are often emails sent to company employees impersonating C-level executives which ask employees to make large financial transactions or purchases.

Additionally, companies use cloud email security software to meet regulatory compliance regarding data protection. Most notably, data loss prevention functions in cloud email security solutions help prevent data leakage on outgoing emails. For example, hacked email accounts (known as account takeover) can email out sensitive information. A less sinister example would be when a legitimate employee mistakenly sends out sensitive information such as personally identifiable information (PII), Social Security numbers, credit card numbers, and other confidential data. Additionally, when a breach occurs, reporting functions in the cloud email security software can assist IT administrators in understanding which accounts were impacted in the incident.

Who Uses Cloud Email Security Software?

All companies that use email systems, whether on-premises or cloud-based, should have an email security tool in place. Cloud email security software is used to protect cloud-based email systems. Typically, a company's IT administrators manage the deployment and monitoring of these tools. Using cloud-based solutions instead of on-premises solutions, IT administrators can save time by not patching software or hardware.

Cloud Email Security Software Features

At minimum, cloud email security software offers advanced filtering functionality and rule-based actions to prevent email-based spam, malware, viruses, and phishing attempts. Many cloud email security software providers include additional functionality including advanced threat protection, encryption, and data loss prevention tools, among others.

Anti-spam — This functionality prevents unwanted emails (bulk, mass, or other junk emails) from reaching recipients mailboxes. Filtering out spam emails can improve employee productivity, because employees are not sifting through unwanted emails.

Anti-malware — This feature prevents emails with malicious links or attachments embedded with malware (ransomware, spyware, other viruses, etc.) from reaching email recipients.

Anti-phishing — This functionality helps prevent social engineering attacks such as phishing, spear-phishing, and C-level executive impersonation attacks.

Filtering functionality — With filters, IT administrators can allow and prevent the delivery of certain kinds of emails to end users. Filters can include: approved senders, approved lists, greylists such as bulk emails that may not be malicious, blocked senders, blocklists, IP reputation, content (such as profanity, credit card numbers, password protected files, and other sensitive information), virus detection, redirects and malicious URLs, newsletter detection, attachment size, and invalid recipients.

Rule-based actions — Using rule-based actions, the cloud email security software can automatically block, delete, route to, tag a subject, copy an administrator, and redirect emails to another email address, among other actions.

Granular search functionality — Cloud email security solutions enable IT administrators to locate specific emails using granular search functionality. Users can narrow emails down from sender, recipient, content, and many other factors.

User groups settings — With user group settings, IT administrators can easily manage users by assigning them to groups and applying group settings.

Reporting — One of the major benefits of using cloud email security software is the ability to create reports to understand unique threats over time. Many cloud email security solutions provide incident logging with granular detail, which is required for regulatory compliance. Reports often come in PDF or CSV formats.

Dashboards (administrator and end-user) — Cloud email security solutions offer dashboards for administrators to manage their company’s email security, as well as quarantine dashboard for end users to review suspicious email activity related to their user account.

Additional Cloud Email Security Features

Advanced threat protection — As email-borne threats become more sophisticated, so must the security tools needed to thwart these attacks. Many cloud email security solutions include further security tools, providing an additional layer of protection on top of standard anti-spam, anti-malware, and anti-phishing functions. Advanced threat protections often include machine learning to conduct abnormal behavioral analysis, display name spoof detection (especially regarding C-level impersonation attacks), detecting lookalike email domains that are visually confusing (such as the letters “RN" looking like the letter “M" when in lowercase. Example, “" visually looks like “"), compromised email account detection, and other anomalies.

Embedded data loss protection — While cloud email security is mostly concerned with ensuring the safety of incoming mail, some tools monitor outgoing mail, as well. Monitoring can prevent employees from sending sensitive information externally via email. Monitoring can also include things such as ensuring employees do not use profanity or other non-approved language in their emails to prevent reputational damage.

Multi-language — Some cloud email security software providers support email analysis in multiple languages and allow custom dictionaries.

Embedded encryption — Some cloud email security solutions offer embedded encryption functions, which apply encryption to a company’s outgoing emails based on specific policies.

Archiving — Some cloud email security solutions also offer archiving solutions, which are helpful for companies in regulated industries to properly store, secure, and search emails as needed.