List of the Top 25 Email Security Software for Google Workspace in 2025

Guardz is an advanced cybersecurity solution driven by AI, designed to equip Managed Service Providers (MSPs) with the tools necessary to safeguard and insure small to medium-sized enterprises against cyber threats. This platform offers automated detection and response mechanisms that shield users, devices, cloud directories, and sensitive data from potential attacks. By streamlining cybersecurity management, it enables businesses to concentrate on their expansion without the burden of complicated security measures. Additionally, the pricing structure of Guardz is both scalable and economical, providing thorough protection for digital assets while promoting swift implementation and supporting business development. Moreover, its user-friendly interface ensures that even those without extensive technical knowledge can effectively manage their cybersecurity needs.

N-able Mail Assure is a cloud-based solution for email security that delivers sophisticated protection against threats for both incoming and outgoing emails, utilizing collective threat intelligence, a comprehensive email archive, and round-the-clock email continuity services. The platform features multi-tenant web interfaces equipped with preset configurations, detailed reporting, and visual tools that enhance oversight and management of all email transactions. This innovative system employs proprietary technology that analyzes extensive email data to enhance its Intelligent Protection and Filtering engine. By incorporating real-time threat pattern detection and leveraging a diverse array of filtering technologies, N-able Mail Assure effectively safeguards users from spam, viruses, phishing attempts, impersonation, malware, and various other email-related dangers. Additionally, its seamless integration and user-friendly interface ensure that organizations can maintain robust email security with minimal effort.

Discover reliable, enterprise-grade email, calendar, and collaboration solutions that fit your budget. Kerio Connect presents a wide array of features for communication and teamwork, eliminating the complexities and high expenses typically linked to other services. It offers an integrated experience that combines email with shared calendars, scheduling tools, contact management, tasks, notes, shared and public folders, along with instant messaging capabilities. Users can easily sync their emails to their favorite mobile devices via Microsoft ActiveSync. The Instant Messaging functionality supports XMPP, making it compatible with various third-party chat and IM applications across both desktop and mobile platforms. Setting up Kerio Connect is a breeze, taking only 10 minutes, after which users can begin working almost immediately. This solution can be implemented on-site or through cloud environments hosted by partners, catering to users on Mac, Windows, or Linux systems. Additionally, it ensures full support for Outlook on both Windows and Mac, along with compatibility for numerous other IMAP or POP-compliant email clients, providing flexibility and smooth integration for every user. Embrace a collaborative experience that is straightforward and efficient, allowing your team to focus on what truly matters.

Protect against ransomware, spam, phishing, and a range of other cyber threats that pose risks to small and medium-sized businesses, large enterprises, healthcare institutions, and government bodies, including their contractors. MailRoute provides API-level integration with platforms such as Microsoft Office 365 & GCC High, Google Workspace, and other email service providers, effectively reducing the likelihood of email-related attacks that could jeopardize sensitive information and systems. Our service delivers an affordable, multi-layered defense strategy that aligns with CMMC, NIST 800-171, HIPAA, and DFARS compliance, and is recognized by DISA for its email security capabilities. Built to eliminate any single point of failure, our fully owned infrastructure includes geo-distributed data centers that are outfitted with redundant network connections, power sources, and cooling systems, achieving a remarkable uptime of 99.999%. In addition, MailRoute combats email forgery and spoofing through sophisticated email authentication methods and managed DNS adjustments. By continuously overseeing and updating your email network security, we mitigate cyber threats and lessen risks like operational downtime, fostering both predictable costs and dependable services. Our ongoing commitment to reinforce email security reflects our determination to protect your digital assets from the constantly changing landscape of cyber threats, ultimately ensuring peace of mind for your organization. As the digital world evolves, so does our approach, adapting to new challenges to offer the best protection possible.

Protect the integrity of Microsoft Office 365, Google G Suite, and in-house email systems by deploying the industry's most effective email security solutions. Safeguard users from various threats, including spear phishing, credential compromise, and ransomware, by implementing Email Threat Isolation techniques. Address common email vulnerabilities such as spear phishing, ransomware, business email compromise, and spam with strong protective measures. Thwart spear phishing attempts through a layered defense system that includes threat isolation, spam filtering, advanced analytics, and user training initiatives. Shield against the latest ransomware threats by utilizing sophisticated content defense methods, sandboxing, and link protection technologies designed to detect new and hidden threats, including zero-day exploits. Counteract business email compromise by using impersonation safeguards, enforcing sender authentication, and applying brand protection tactics. Improve your brand's reputation and reduce risks by automating the enforcement of sender authentication methods like DMARC, DKIM, and SPF with Symantec Email Fraud Protection, which effectively tackles the challenges associated with email security. By adopting these comprehensive strategies, organizations not only protect their communications but also cultivate a security-conscious culture among their users, ultimately enhancing overall organizational resilience against email-based threats. Investing in these solutions is crucial for maintaining secure and trustworthy communication channels.

Effortlessly oversee email signatures for every user across all their devices. Designed specifically for Microsoft 365 and Google Workspace, this platform boasts decades of expertise in managing email signatures effectively. Ensure that all employees have consistent, professionally branded, and current signatures, regardless of their device, department, or location. You can also design targeted email signature marketing banners that appear beneath contact information to communicate updates, highlight achievements, showcase values, promote content, and much more, all featuring clickable calls-to-action to enhance engagement and drive traffic. With a role-based login system, the marketing or communications department can manage everything seamlessly. Once the initial setup is completed in just 45 minutes, IT teams are free from any ongoing responsibilities. The platform is securely hosted in ISO 27001-certified data centers, specifically on Microsoft Azure, guaranteeing optimal security for data storage in compliance with all laws and regulations, including GDPR. This robust framework not only safeguards sensitive information but also enhances user confidence in the management of their email communications.

Efficiently categorize deceptive emails while proactively detecting and isolating questionable URLs. Utilizing big data analytics enables precise classification of mass email communications. This comprehensive solution integrates seamlessly with both Google Workspace and Microsoft 365. Spambrella's Email Security and User Awareness Training technology is trusted by numerous leading security-focused organizations worldwide, spanning various industries and regions. By partnering with Spambrella, you can consolidate your email security strategies and user training initiatives on an international scale. Acting as your dedicated email security team, Spambrella ensures a smooth transition while possessing the technical know-how of other major providers like Symantec.cloud, Mimecast, and MxLogic. To safeguard your email users from potential threats, reach out today to arrange a demonstration with our cybersecurity specialists and enhance your email protection strategy.

Guardian Digital offers robust protection against various email threats, including phishing scams, zero-day vulnerabilities, and debilitating ransomware assaults. These dangers represent just a fraction of the numerous risks that email users encounter daily. Given that over 90% of cyber attacks begin with an email, securing email is fundamentally a matter of business security. An effective, purpose-driven solution is essential for safeguarding email communications. It effectively addresses significant security vulnerabilities found in platforms like Microsoft 365 and Google Workspace. In addition, it offers remote assistance, expert installation, and continuous management from a distance. Furthermore, we deliver real-time insights into cybersecurity for businesses, enabling you to evaluate your existing risk profile and bolster your defenses against the pervasive threats that all organizations face through email interactions. Ultimately, our comprehensive approach ensures that your email security is not only reactive but also proactive in minimizing potential threats.

LuxSci is dedicated to ensuring the safety of personal information while effectively safeguarding global communications. The company focuses on delivering web and email communication services that adhere to HIPAA regulations. LuxSci develops highly secure and tailored enterprise-level environments and solutions, empowering businesses to meet their unique operational and security requirements effectively. Among the offerings are services like Secure Email, Web, and Forms, which are designed to enhance data protection and facilitate compliance. In addition, LuxSci continuously evolves its services to adapt to the changing landscape of digital security.

Make a wise investment today to bolster your defenses against email security threats by acquiring a robust email security solution tailored for small businesses at affordable rates. Cybercriminals are increasingly targeting high-level executives like CEOs and CFOs across various sectors, alongside crucial departments such as HR and Accounting. While Office 365 offers some level of protection, its capabilities are insufficient to effectively combat impersonations, email fraud, and phishing attacks. Relying solely on custom transport rules to block domains and guard against employee impersonations can leave significant gaps in security. PhishProtection stands out as it is compatible with all email servers, devices, and SMTP services, ensuring comprehensive protection regardless of your location or the email client you use. Whether you access your emails through your phone, Outlook, or other platforms, this solution offers top-notch security for both Android and iOS devices, making it a critical investment for safeguarding your business communications. In today’s evolving cyber landscape, prioritizing email security is not just smart; it's essential for every small business.

Raptor Email Security is an MX-based system crafted by specialists to effectively block spam, phishing attempts, and malware threats, employing an innovative scoring system along with various technologies like ClamAV, MIMEDefang, and Sendmail. Our dedicated team of spam experts guarantees a spam-free experience, resulting in zero spam and zero support tickets while doubling your resources. By routing your emails through our servers, your system gains robust protection against most cyber threats, allowing you to expand your hosting revenue by adding additional accounts and optimizing resource use. Enhanced by Raptor Review, our service offers a thorough evaluation of your email setup, featuring a premium support line to address issues such as spam blocking, delivery enhancement, scam detection, and recovery of lost emails. Setting up Raptor Email Security is quick and easy, taking just a few minutes, and you can enjoy a complimentary 30-day trial to experience its benefits firsthand. With this solution, you can ensure that your email communication remains secure and efficient while gaining peace of mind.

Keepnet's comprehensive platform for managing human risk enables organizations to cultivate a culture of security through AI-enhanced simulations, personalized training, and automated responses to phishing attempts. This proactive approach significantly mitigates risks stemming from employees, insider threats, and social engineering tactics within the organization and beyond. By utilizing AI-driven phishing simulations across various channels such as email, SMS, voice, QR codes, MFA, and callback phishing, Keepnet perpetually evaluates human behaviors to minimize cybersecurity vulnerabilities. Furthermore, Keepnet's adaptive learning paths are customized for each employee, taking into account their risk profile, job role, and cognitive tendencies, thereby fostering secure practices over time. Employees are also empowered to promptly report any threats they encounter, while security administrators can react 168 times faster thanks to the platform's AI analysis and automated response capabilities. Additionally, Keepnet identifies employees who frequently engage with phishing links, mishandle sensitive information, or overlook security protocols, ensuring that organizations remain vigilant against potential breaches. This continuous cycle of assessment and adaptation is crucial for maintaining a robust defense against evolving cyber threats.

ESET PROTECT Elite is an advanced cybersecurity solution tailored for enterprises, effectively merging extensive detection and response features with a solid multilayered defense architecture. By employing innovative methods such as adaptive scanning, machine learning, cloud sandboxing, and behavioral analysis, it proficiently tackles zero-day vulnerabilities and ransomware threats. This platform offers contemporary endpoint protection for both desktop and mobile devices, alongside server security that guarantees real-time safety of data and mobile threat defenses. Furthermore, it includes full disk encryption, assisting organizations in achieving compliance with data protection regulations. ESET PROTECT Elite also features robust email security capabilities, which provide protection against phishing, malware, and spam, while safeguarding cloud applications such as Microsoft 365 and Google Workspace. With its automated vulnerability management and patching abilities, the solution streamlines the detection and rectification of security weaknesses across all endpoints, encouraging a proactive stance towards cybersecurity. In conclusion, ESET PROTECT Elite stands out as a holistic solution that effectively meets the complex and ever-changing demands posed by contemporary cybersecurity threats, ensuring that organizations remain secure in a digital landscape fraught with risks.

To safeguard enterprises against phishing, malware, and account takeovers, advanced email security solutions are essential, as standard protections often fail to identify malicious emails. Since its inception in 2015, Avanan has transformed the landscape of email security, effectively addressing the limitations of traditional gateways that have struggled to adapt to the demands of cloud computing. With patented technology, Avanan offers comprehensive security for all collaboration applications and protects against threats such as ransomware, account hijacking, business email compromise, and supply chain assaults. Their innovative approach has resulted in a remarkable 99.2% reduction in phishing attacks that make it to users’ inboxes. Powered by True AI, which has been honed on vast datasets, Avanan is adept at thwarting even the most sophisticated phishing attempts before they can cause harm. By leveraging API integrations, machine learning, and AI, Avanan enhances cloud email security effectively. The company boasts a client base of over 5,000, with 60% being large enterprises, and has earned recognition as a leading Email Security Solution according to Gartner Peer Insights and G2. Furthermore, organizations that prioritize security must remain vigilant in fending off evolving threats in today's digital landscape.

While you may think you are being cautious by refraining from sending sensitive emails, isn't it worrisome that your email service provider might have a backdoor allowing them to access your communications? They hold the power to share your messages with third parties whenever they choose, as they establish the protocols and take advantage of any weaknesses in their system. Have you reflected on the information that a single online purchase receipt could expose about your life? Such details could unveil your shopping habits, financial standing, preferred payment methods, home address, and the technology you use, among other insights. This reality is rather alarming, isn't it? Sadly, many businesses and scammers are already taking advantage of this data. Every tiny detail about you is invaluable to outside entities, who will leverage it to gain insights into your habits, sway your buying choices, and in some extreme cases, even impersonate you online. If you are under the impression that your email service is entirely secure, it may be beneficial to perform a quick online search; you'll likely uncover that leading email providers have experienced significant security breaches. Are you still feeling secure about your privacy? Fortunately, a simple and effective privacy solution is available that can protect your emails regardless of where they are sent or received, ultimately providing you with the reassurance you need in today's digital landscape. This peace of mind can help to alleviate the anxiety that comes with sharing your personal information online.

Vade is a leading global provider of predictive email security, protecting 1 billion mailboxes in 76 countries. We enable Managed Service Providers (MSPs) and Small to Medium-sized Businesses (SMBs) to secure their Microsoft 365 users against complex email threats, including phishing, spear phishing, and malware. Numerous organizations, such as Internet Service Providers (ISPs), MSPs, and SMBs, choose Vade's cutting-edge email security solutions to safeguard their customers and operations from these significant cybersecurity risks. Our AI-powered tools are specifically designed to detect threats that traditional defenses frequently overlook. They successfully counteract evolving phishing attacks that bypass standard security measures, alongside targeted spear phishing and business email compromise tactics. Moreover, our technology excels at neutralizing sophisticated polymorphic and zero-day malware attacks, ensuring thorough protection for all users. By utilizing our solutions, businesses can confidently address the intricacies of email security while maintaining peace of mind. Our commitment to innovation ensures that we stay ahead of emerging threats in the ever-evolving cybersecurity landscape.

INKY is a renowned cloud-based solution for email security that has been recognized with multiple awards. It effectively safeguards organizations from phishing threats while also filtering out spam and malware. By leveraging advanced domain-specific machine learning and computer vision techniques, INKY is capable of detecting and neutralizing zero-day phishing attempts, ensuring they do not infiltrate traditional email systems. For emails deemed suspicious, the software displays warning banners to alert users. Its integration with Office 365 can be accomplished in just a few minutes, making it a swift addition to any organization. The system provides Safe, Unusual, and Malicious alerts, helping users discern the appropriate actions to take with their messages. Furthermore, INKY features a comprehensive dashboard that allows for complete oversight and monitoring of blocked threats. The email security solution enhances user protection by embedding clear warnings within emails, providing tailored advice to help users stay informed. These Safe, Unusual, and Malicious alerts come complete with detailed information, prompting users to scrutinize their emails further or to exercise caution. Clients particularly appreciate the ease of reporting suspicious emails with a single click, reinforcing the software’s user-friendly design and effective security measures. Overall, INKY not only protects businesses but also empowers users with knowledge and tools to navigate their inboxes safely.

Darktrace revolutionizes cybersecurity with its ActiveAI Security Platform, leveraging self-learning AI to provide proactive defense and real-time threat detection across an organization’s entire infrastructure. The platform ingests and analyzes data from a variety of sources, including internal native systems, third-party security tools, and cloud applications, offering unparalleled visibility into security posture and attack paths. Darktrace’s AI continuously correlates incidents, enabling the system to detect threats that are previously unseen, including zero-day threats. Through automation, Darktrace not only investigates alerts but also provides autonomous responses, helping security teams prioritize critical threats and take immediate action. The platform also aids in exposure management, phishing simulations, and red and blue team exercises, offering a comprehensive suite of tools to address vulnerabilities before they can be exploited. By reducing manual intervention, Darktrace enables faster triage, decreases containment times, and enhances efficiency across security operations. Its ability to protect diverse environments, including IT, OT, endpoints, and identity systems, makes it a complete cybersecurity solution for modern enterprises.

Abnormal AI is a cutting-edge cybersecurity platform that uses behavioral AI to shield organizations from increasingly sophisticated email-based threats, including phishing, social engineering, and account takeovers. By analyzing human behavioral patterns and identifying anomalies, Abnormal AI detects AI-generated attacks that move at machine speed and frequently evade standard security measures. The platform’s fully autonomous AI-driven agents quickly neutralize threats without human intervention, allowing security teams to focus on higher-priority tasks. Seamlessly integrating with popular cloud email platforms such as Microsoft 365, Abnormal AI provides a multi-layered defense that reduces operational overhead while enhancing protection. Trusted by over 3,000 customers worldwide, including a significant portion of Fortune 500 companies, the platform delivers a 90% reduction in phishing attacks and cuts security operations center (SOC) staffing needs by half. Users appreciate the platform’s rapid deployment, often identifying threats within days, and its continuous improvements based on customer feedback. The solution also automates routine SOC workflows, improving efficiency and response times. Abnormal AI’s unique, human-focused behavioral approach addresses the root cause of email threats by protecting humans rather than just blocking attacks. Industry leaders from diverse sectors report substantial decreases in impersonation attempts and increased confidence in their email security posture. By proactively combating AI-powered threats, Abnormal AI helps organizations safeguard their finances, reputation, and operational continuity in an evolving threat landscape.

Aspida Mail was created with a focus on user-friendliness, allowing you to continue your daily business activities seamlessly. Its installation is simple and works with any device that has IMAP capabilities. Furthermore, Aspida Mail offers encrypted email services that meet HIPAA compliance standards. This blend of functionalities not only enhances security but also ensures effective communication, making it an excellent option for individuals and organizations in need of reliable email services.

Armorblox utilizes cutting-edge natural language processing, deep learning techniques, and statistical approaches to protect enterprise communications from incoming threats and safeguard sensitive information. By leveraging a wide range of data sources, signals, and detection methods, the platform strengthens its defensive measures. It effectively addresses challenges such as business email compromise, account takeovers, executive impersonation, and other targeted cyberattacks. Users gain access to in-depth attack analyses that are crafted for easy comprehension and human understanding. The system can automatically delete, quarantine, or tag emails based on predefined policies, while also detecting breaches of PII and PCI standards, such as exposed passwords. Additionally, it ensures that any outgoing emails that contain confidential information are blocked, preventing potential data leaks. The solution also stops lateral data leaks across multiple communication platforms, including email, messaging services, and file-sharing applications. It also provides automatic resolution for any false positives flagged by users. With just a single click, suspicious emails can be removed from numerous user inboxes, simplifying the cleanup effort. Furthermore, dynamic policies are employed to mitigate the risk of similar threats occurring in the future, thereby enhancing overall security. Ultimately, Armorblox not only offers robust protection but also fortifies organizational resilience in the face of ever-changing cybersecurity threats, making it an essential tool for modern enterprises.

Phishing emails are the origin of approximately 90% of cyberattacks that lead to data breaches. Introducing Graphus, an affordable and efficient automated phishing defense solution tailored for businesses looking to safeguard against significant cyber threats. Utilizing a patented AI algorithm, Graphus swiftly identifies and isolates suspicious emails, enhancing the security of your clients while simultaneously boosting monthly recurring revenue (MRR). It provides automated phishing protection for popular platforms such as Office 365 and G Suite. The cutting-edge AI technology from Graphus is designed to learn from each company's communication habits, continually improving their overall security posture and ensuring peace of mind for both you and your clients. Furthermore, TrustGraph® effectively identifies and quarantines potentially harmful emails that may have evaded existing email platform security measures or Secure Email Gateways. Additionally, EmployeeShield® enhances security by incorporating an interactive warning banner on dubious messages, allowing recipients to take action by either quarantining the emails or marking them as safe. Ultimately, these features work collaboratively to create a robust defense against phishing threats.

Reliable and secure email hosting services are designed for businesses of all sizes, from small enterprises to large corporations. We oversee the secure handling of over 100 million emails monthly for our diverse clientele. Our offerings feature advanced gateway security, effective filtering mechanisms, inbound email protection, reliable email backups, and outbound SMTP services, all supported by state-of-the-art infrastructure to achieve the high standards expected by our clients. We also provide a secure email gateway, backup MX solutions, email forwarding, outbound SMTP, and a variety of additional features. DuoCircle stands out by offering strong defenses against phishing attacks through its Link Click Protection, which is a part of the Advanced Threat Defense Suite. This innovative feature guarantees protection even if a website's content changes between clicks, keeping potential threats at bay. With Link Click Protection, sensitive corporate data is well-protected, as employees are prevented from visiting sites that could exploit this information. Moreover, you will receive prompt notifications when there’s an attempt to click on a suspicious link, ensuring that your security is always prioritized. In summary, our extensive email security solutions significantly bolster the safety of your communications while providing assurance for your organization’s data integrity. Furthermore, we are committed to continuously enhancing our services to meet the evolving demands of today’s digital landscape.

As companies shift towards cloud-based email solutions, it is essential to reevaluate email security protocols to effectively address the growing sophistication of zero-day threats and complex social engineering schemes, including business email compromise and account takeovers. The GreatHorn Cloud Email Security Platform transforms risk management by integrating cutting-edge detection capabilities for ever-evolving phishing attacks, while simultaneously promoting user involvement and efficient incident response, thus empowering organizations to confront advanced threats as they emerge. Notably, the platform can be set up in just five minutes without any need for adjustments to mail routing or MX records, featuring out-of-the-box policies that provide instant protection. By harnessing the power of artificial intelligence and machine learning, it adeptly identifies risk zones, uncovers threat patterns, and detects zero-day phishing attempts, which significantly reduces response times. Furthermore, ongoing user engagement is vital, as it offers real-time training for users who may encounter a phishing threat in their inbox, which bolsters overall security awareness in the organization. This proactive strategy not only enhances organizational defense but also ensures that businesses remain robust against the dynamic landscape of cyber threats. In this way, organizations can cultivate a culture of vigilance that is essential for navigating today's complex digital environment.

Email functions as a vital repository for sensitive data, serving as the primary access point for numerous accounts and dominating its use in the business world. With multiple entry vectors available to intruders, simply blocking incoming messages proves inadequate. It is crucial to protect key communications while maintaining employee productivity. Material automatically detects and redacts sensitive information embedded in emails, ensuring security even in the face of unauthorized access. A straightforward verification process allows for the quick restoration of the original message back to the inbox. By minimizing potential damage from a security breach, it stops attackers from leveraging compromised email accounts to infiltrate other services. This system implements an easy verification step prior to granting access to password resets and other critical communications. Although phishing training is widely regarded as a necessary practice, it alone does not suffice, as one employee may notify the organization of an issue while others might still become victims. Material empowers any single report from an employee to instantly protect the entire organization from potential threats. Obtain unprecedented visibility and control over your complete email environment, significantly fortifying your security measures. This proactive strategy not only strengthens defenses but also cultivates a culture of awareness and vigilance among employees regarding email communications, ensuring that everyone remains alert to potential risks. The importance of a unified response to threats cannot be overstated, as it fortifies the organization’s resilience against future incidents.