Best Email Security Software for On-Premises of 2025

Advanced protection for your inbox. Email is still the number one threat vector. Email is still the No. Expand your defenses so you can detect dangerous threats, and respond quickly to and remediate any new threats in real-time. Identify the malicious tactics used in attacks against your organization. Understanding the specific risks to your business and categorizing threats will help you gain insight into which parts of your organisation are most vulnerable. AI-driven threat recognition uses multiple detection engines that simultaneously evaluate different parts of an incoming message. These verdict details ensure accurate threat classification and identify business risks, as well as promote an appropriate response. There are many threats: phishing emails, malware, ransomware, and business email compromise. With industry-leading threat information, you can quickly act to protect yourself against them.

Kevlarr provides the most comprehensive DMARC monitoring & management solution for MSPs. Our platform is purpose-built and empowers MSPs. Our dashboard simplifies the process of setting up and maintaining a strict DMARC Policy. Our AI-driven filters eliminate all irrelevant data. Our AI filters can filter out data relating to spoof emails or spoof attacks. You only need to pay attention to the data that you, or your customer, actually control. This can save your specialists time. Our wizard guides you step-by-step through the DMARC management process. This solution is the result of our years of experience and knowledge in DMARC management. We zoom in on the domains that need your attention for each customer. We start with the most pressing issues. You can be sure you won't forget anything.

Protect Microsoft Office 365, Google G Suite and on-premises email using the industry's best email security solution. Email Threat Isolation protects users from ransomware, credential theft, and spear phishing. Stop insidious email threats like ransomware, spear phishing, email spam, business email compromise, and email theft. Multiple layers of protection are available to stop spear phishing emails. These include threat isolation, spam filtering and advanced security email analytics. Built-in user awareness and education tools can also be used. Protect your computer from the latest ransomware by using content defense, sandboxing and link protection technologies to detect new, stealthy and zero-day attacks. Protect your business email from compromise by using impersonation protection, sender authentication enforcement, and brand protection controls. Symantec Email Fraud Protection protects your brand reputation and solves the practical issues of sending authentication (DMARC/DKIM/SPF).

Secure, enterprise-style email and collaboration without the high price. Kerio Connect offers all the functionality and features for collaboration and messaging without the complexity or high price tag of other systems. Email integration includes shared calendars, scheduling, contacts management and tasks. It also integrates with instant messaging and shared folders. Microsoft ActiveSync allows you to sync messages directly to your mobile device. Instant Messaging can be used from any 3rd party chat/IM application on mobile and desktop. Kerio Connect can be installed in just 10 minutes. Users can also be up and running in as little as 10 minutes. Kerio Connect is available on-premises and in partner-hosted cloud environments. You can deploy for Mac, Windows, and Linux users. Full support for Outlook (Windows, Mac), and many other IMAP and POP compliant email client.

It is now easier than ever to send and receive digitally signed encrypted emails. The Secure E-Mail Gateway (SEPPmail) with its patented GINA procedure for spontaneous encrypted, SMEs as well as large corporations can secure all e-mail communications at the highest level. It requires minimal effort and is easy to use for both sender and receiver. SEPPmail's comprehensive Secure Email solution sets new standards in secure, GDPR-compliant email communication. SEPPmail is a world-class email encryption and signature solution. It includes all the features necessary to protect confidential data via email, ensure authenticity of the sender, and ensure confidentiality and integrity of the message. The modular design of the secure email gateway solution allows it to be customized to meet customer needs and can be easily expanded.

DocsCorp is the choice of document management professionals looking for software that makes their jobs easier and more efficient. Our global brand has more than 500,000 users in 65 countries. Our product portfolio includes document creation, email recipient check, metadata cleaning and document comparison. You can also access our PDF creation and PDF conversion software on your desktop, server, or cloud. Our products are compatible with the most popular enterprise content management systems. This allows for business efficiency and streamlines processes. We offer organizations both on-premises integrations and cloud integrations. We work with industries that are document-centric in order to help them manage their most important asset - documents. This includes Government Departments and Legal Services, Financial Services, as well as Technology companies.

CB Exchange Server Sync allows for secure synchronization of data and data migration between Exchange Servers. It allows for easy synchronization between multiple Outlook accounts hosted on Exchange Server or Office 365. You can customize it to meet your business's needs. It can be used for synchronization of emails, calendars, tasks, contacts, public folders, and other information. This solution allows seamless migration of your entire Exchange / Outlook models to Office 365 or other Exchange versions starting with Exchange 2010 SP1 or later. It's great when combined with: * CB Super Secure Exchange Server is the solution to stop hackers from using Exchange Server to gain access to a secure network. * Outlook Content Censor - Access your Exchange account from outside the company without revealing sensitive information. You can restrict attachments, address and signatures.

Office 365 Management is now easier than ever. Manage everything with AD Users & Computers. Eliminate Exchange on-premises. Easy365Manager integrates Office 365 and AD management, eliminating need to log in to web consoles or run PowerShell. Easy365Manager adds two new tabs for user properties to AD Users & Computers. You can now manage EXO mailboxes from AD user properties, including complex settings such as calendar delegation which would otherwise require PowerShell scripting. Easy365Manager allows your first-level admin to work faster and reduces the number of tickets escalated to senior administrators. Easy365Manager can be installed on any PC or server with AD Users & Computers. There is no server component or service, AD Extension, or custom security layer. Easy365Manager can be installed and configured in less than 2 minutes, and you will instantly be rid of hybrid Office 365 management.

Protect your organization from accidental data breaches with VIPRE SafeSend, a powerful and proactive solution for Microsoft Outlook. SafeSend prompts users to double-check external recipients and attachments before sending emails, significantly reducing the risk of misaddressed messages and costly mistakes. Unlike traditional Data Loss Prevention (DLP) tools that block emails after they’re sent—leaving understaffed security teams burdened with reviewing and releasing them—SafeSend works in real-time, empowering employees to identify and prevent potential errors before they happen. SafeSend also scans outgoing emails and attachments to ensure sensitive data stays securely within your network, offering an extra layer of protection. Over time, employees naturally develop better email habits, fostering a more security-conscious workforce. Available in two packages, SafeSend offers targeted solutions: one focused on preventing misaddressed emails and another designed to address comprehensive DLP use cases. With VIPRE SafeSend, your organization can reduce data leakage risks while building a culture of awareness and accountability.

The Accellion secure communication platform prevents data breaches from third-party cyber risk. CIOs and CISOs rely upon the Accellion platform to ensure complete visibility, compliance, and control over communication of IP, PII and PHI across all third-party communication channels. This includes email, file sharing and mobile, enterprise apps, web portals and SFTP as well as automated inter-business workflows. Users click the Accellion button to know that it is the safest and most secure way to share sensitive information outside of the company. The Accellion platform offers a variety of deployment options including FedRAMP, FedRAMP, hybrid, and on-premise. It provides the security and governance CISOs require to protect their organizations, reduce risk, and comply with strict compliance regulations like NIST 800-171, HIPAA and SOX, GDPR and GLBA. More than 25 million users have been protected by Accellion solutions at over 3,000 companies.

As a cloud-based, full-managed SaaS email encryption provider, Echoworx alone offers 8 ways to send protected mail, with support for 9 authentication options and up-to 28 languages – ensuring secure communication anywhere, on any device. Key features: • Multiple ways to send secure mail ( Web Portal, S/MIME, PGP, Secure PDF, Certificate Encryption, Secure Attachment (PDF, Office, ZIP), TLS with fallback) • More authentication options (Full OAuth Access, Self-Registration, SMS, Shared Secret Passphrase, SSO, System-Generated Verification Codes, Passwordless, and Multi-Factor Authentication (MFA) • Free full proof of concept trial (POC) • 24/7 expert support • End-to-end deployment • Recall and tracking options for secure mail • Extensive branding • Self Service Account Management

Libraesva Email Security shields your organization from both established and emerging email threats, ensuring that only genuine messages reach you. It offers top-notch email protection through the fusion of cloud email and a secure email gateway, enhanced by Libraesva's distinctive Adaptive Trust Engine. This engine utilizes AI to comprehend typical behavioral patterns within organizations and among individuals, continuously evaluating the trustworthiness of business interactions and preemptively flagging unusual activity. Libraesva Email Security meticulously scans and sifts through all incoming and outgoing emails, identifying and thwarting advanced malware, phishing attempts, business email compromises, spam, and other risks. Its exclusive sandboxing technology disarms hazardous payloads and active content within attachments, while proactive URL analysis scrutinizes every link to shield users from accessing harmful websites.

We want you to simply focus only on what you do! EmailAuth.io is part of the Infosec Ventures group and our core value lies in taking care of your most valuable digital asset: Email. We thrive to increase your Email Deliverability and help you get the maximum ROI from your mailing campaigns and increase trust amongst your customers, partners and vendors! We don't just provide support, we manage! EmailAuth's methodology includes owning the journey of attaining ultimate security of your domains. Our team of Security Experts and dedicated Customer Success Managers make sure to work with you effortlessly.

Protect your email infrastructure and users, whether they are on-premises or in cloud. Trellix Email Security can help you identify and mitigate advanced email threats such as ransomware, BEC (business email compromise) and phishing. Trellix Email Security will provide you with the best detection and response capabilities to create a trusted, resilient environment for email. Prioritized alerts help analysts quickly identify current threats and take immediate action. With the most advanced sandbox technology and AI, you can keep your email safe, no matter where it is stored. To gain insights and create a unified security ecosystem, connect with as many as 65 Trellix solutions as well as third-party products. This on-premises solution will reduce the risk of breaches, identify, isolate and protect against advanced URL- and attachment-based attacks. Select Advanced Threat mode to find malicious URLs using custom plug-ins or Full Hygiene mode for reducing impersonation, BEC and other issues.