Best Email Security Software in the USA
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Compare the Top Email Security Software in the USA as of November 2025
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What is Email Security Software in the USA?
Email security software protects organizations from cyber threats such as phishing, malware, and spam by filtering incoming and outgoing email traffic. It uses advanced threat detection, encryption, and data loss prevention (DLP) to safeguard sensitive information. These tools also offer features like email authentication (DMARC, SPF, DKIM) and real-time threat intelligence to block emerging attacks. By securing email communications, businesses can prevent data breaches, ensure regulatory compliance, and maintain user trust. Email security software is essential for mitigating human error, which is one of the leading causes of data breaches. Compare and read user reviews of the best Email Security software in the USA currently available using the table below. This list is updated regularly.
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1
Guardz
Guardz
Guardz is the unified cybersecurity platform purpose-built for MSPs. We consolidate the essential security controls, including identities, endpoints, email, awareness, and more, into one AI-native framework designed for operational efficiency. Our identity-centric approach connects the dots across vectors, reducing the gaps that siloed tools leave behind so MSPs can see, understand, and act on user risk in real time. Backed by an elite research and threat hunting team, Guardz strengthens detection across environments, turning signals into actionable insights. With 24/7 AI + human-led MDR, Guardz utilizes agentic AI to triage at machine speed while expert analysts validate, mitigate, and guide response, giving MSPs scalable protection without adding headcount. Our mission is simple: give MSPs the scale, confidence, and clarity they need to stay ahead of attackers and deliver protection to every SMB they serve. -
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Cynet empowers MSPs and MSSPs with a comprehensive, fully managed cybersecurity platform that consolidates essential security functions into a single, easy-to-use solution. Cynet simplifies cybersecurity management, reduces operational overhead, and lowers costs by eliminating the need for multiple vendors and complex integrations. The platform provides multi-layered breach protection, offering robust security for endpoints, networks, and SaaS/Cloud environments. Cynet’s advanced automation streamlines incident response, ensuring rapid detection, prevention, and resolution of threats. Additionally, the platform is backed by Cynet’s 24/7 Security Operations Center (SOC), where the expert CyOps team delivers around-the-clock monitoring and support to safeguard all client environments. By partnering with Cynet, You can offer your clients advanced, proactive cybersecurity services while optimizing efficiency. Discover how Cynet can transform your security offerings today.
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3
SpamTitan
TitanHQ
SpamTitan email security is an email spam filter for businesses, smbs, MSPs, and schools. SpamTitan email security blocks spam as well as phishing and day-zero attacks, viruses, malware, ransomware, and other email threats. Helps control mail flow, clean it, and protect against unwanted email. We provide easy-to-use yet advanced email security for businesses, smbs and MSPs that are Office365 friendly. SpamTitan - Premium functionality included: • CEO Impersonation protection • Phishing/ Spear phishing protection • Link analysis • Full Sandboxing • Zero Day Attacks protection • Mail Spooling • Spoofing protection • Malware and Ransomware protection • SPF/DKIM/DMARC checking • Encryption • Fully multitenant environment • Ability to rebrand the entire UI • Full REST API: • Comprehensive support and set up docs Try a FREE, fully supported trial of SpamTitan Email Security today.Starting Price: $2.14/user/month -
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PowerDMARC
PowerDMARC
PowerDMARC is a comprehensive email security solution designed to protect your brand reputation and safeguard your email communications. By leveraging advanced technologies such as DMARC, SPF, DKIM, BIMI, MTA-STS, and TLS-RPT, PowerDMARC offers a robust defense against email threats like spoofing, phishing, and ransomware. Our user-friendly platform simplifies complex configurations, empowering you to easily manage and monitor your email security posture. With AI-powered threat intelligence, you gain valuable insights to proactively identify and mitigate emerging threats. Trusted by over 2000 organizations globally, including Fortune 100 companies and governments, PowerDMARC is your trusted partner in securing your email infrastructure.Starting Price: $8 per month -
5
Cloudflare
Cloudflare
Cloudflare is the foundation for your infrastructure, applications, and teams. Cloudflare secures and ensures the reliability of your external-facing resources such as websites, APIs, and applications. It protects your internal resources such as behind-the-firewall applications, teams, and devices. And it is your platform for developing globally scalable applications. Your website, APIs, and applications are your key channels for doing business with your customers and suppliers. As more and more shift online, ensuring these resources are secure, performant and reliable is a business imperative. Cloudflare for Infrastructure is a complete solution to enable this for anything connected to the Internet. Behind-the-firewall applications and devices are foundational to the work of your internal teams. The recent surge in remote work is testing the limits of many organizations’ VPN and other hardware solutions.Starting Price: $20 per website -
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NeoCertified Secure Email
NeoCertified
NeoCertified protects sensitive information through our secure email application across our versatile Cloud-based platform on any web browser, through Microsoft Office 365/Outlook plug-ins, and Gmail integration. iPhone + Android mobile apps are also available directly on your mobile devices. We have provided federally compliant, secure email solutions since 2002, and have helped businesses send and receive secure emails on any web browser or mobile device. NeoCertified also works across all email providers to give businesses the flexibility and assured protection they desire and deserve.Starting Price: $99.00/year/user -
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Heimdal® Endpoint Detection and Response is our proprietary multi-solution service providing unique prevention, threat-hunting, and remediation capabilities. It combines some of the most advanced threat-hunting technologies: - Next-Gen Antivirus - Privileged Access Management - Application Control - Ransomware Encryption Protection - Patch & Asset Management - Email Security - Remote Desktop - Threat Prevention ( DNS based ) - Threat Hunting & Action Center With 9 modules working together seamlessly under one convenient roof, all within one agent and one platform, Heimdal Endpoint Detection and Response grants you access to all the essential cybersecurity layers your business needs to protect itself against both known and unknown online and insider threats. Our state-of-the-art product empowers you to quickly and effortlessly respond to sophisticated malware with stunning accuracy, protecting your digital assets and your reputation in the process as well.Starting Price: $0/month
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8
Paubox
Paubox
Healthcare's simple, easy, and scalable way to email secure, HIPAA compliant patient information. Keeping patient data secure and remaining HIPAA compliant is a top concern for healthcare organizations, especially when it comes to email. Paubox Email Suite provides guaranteed encryption so you can rest assured your patient data is protected. Our HIPAA compliant email service removes the hassle of portals and passcodes by sending encrypted emails that can be read right in your recipient’s inbox. Healthcare email encryption is easy with our patented tools which integrate easily into your existing email system with no training necessary for employees. Paubox HIPAA compliant email service is designed to empower IT and simplify the process for end-users, making the frustrations and vulnerability of emailing PHI a thing of the past.Starting Price: $29/month -
9
FileWall
Odix
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.Starting Price: $1 per user, per month -
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MailRoute
MailRoute
Stop Ransomware, spam and phishing, other viruses and threats for SMB, Enterprise, Healthcare, and Government agencies and contractors. API-level integration for Microsoft Office 365 & GCC High, Google Workplace, other email hosts and all servers. MailRoute stops email-instigated attacks on your information and hardware, with cost-effective, multi-layered protection. We offer CMMC, NIST 800-171, HIPAA, DFARS compliant and DISA accepted email security services. No single point of failure. Wholly owned solution includes geo-distributed datacenters with redundant network feeds, power sources and cooling, for 99.999% uptime. MailRoute prevents forgeries and email spoofing by identifying malicious messages with email authentication tools through assisted and managed DNS changes. Continually managed and updated email-network security stops cybercrime and threats like downtime, ensuring cost-predictability and reliability.Starting Price: $2 per user per month -
11
SEPPmail
SEPPmail AG
Sending and receiving digitally signed and encrypted emails is easier and more convenient than ever before. Thanks to the Secure E-Mail Gateway from SEPPmail with integrated and patented GINA procedure for spontaneous encryption, SMEs and large companies secure their entire e-mail communication at the highest level, with the least effort and simplest handling for sender and recipient. With its comprehensive Secure Email solution, SEPPmail is setting new standards for secure, GDPR-compliant email communication. As one of the world’s leading email encryption and signature solutions, SEPPmail includes all the features to protect the sending of confidential data via email, guarantee the authenticity of the sender and ensure the confidentiality and integrity of the message. Thanks to its modularity, the secure e-mail gateway solution can be configured according to customer-specific requirements and expanded seamlessly.Starting Price: 4.5 € per user per month -
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Xink
Xink
Manage Microsoft 365 or Google Workspace email signatures in one place with Xink's powerful web portal - built on a decade of experience with email signature management. Get consistent, branded and up-to-date signatures for all employees across devices, departments, and geography. Create customized and targeted email signature marketing banners below the contact details to share updates, achievements, values, promote content and much more! All with clickable call-to-actions to help you drive traffic and interest. With role-based login, the marketing or communications department can easily manage it. After the initial setup (45 min), IT has no workload. Safely hosted at ISO 27001-certified data centers (Microsoft Azure). This ensures the best, most secure data storage available – under all laws and regulations, including GDPR.Starting Price: $1/user/month -
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VIPRE Email Security
VIPRE Security Group
VIPRE Email Security protects your email users and business network from the latest, most sophisticated malware, weaponized attachments, and phishing threats that bypass traditional detection methods. As a secure email gateway, it analyzes inbound and outbound emails in real-time for threats. Powerful visual analytics provide visibility into ongoing attacks, enabling quick and precise response to threats. With a simple integration into Microsoft 365, VIPRE can remove malicious or suspicious emails from a user’s inbox even after delivery. Available in two versions: VIPRE Email Security Cloud provides strong core protection, while VIPRE Email Advanced Threat Protection offers advanced, AI-driven techniques for file attachment and link analysis.Starting Price: $30/seat/year -
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Spambrella
Spambrella
Dynamically classify imposter email. Preemptively identify and sandbox suspicious URLs. Leverage big-data analysis to accurately classify bulk mail. All within a single service that connects with Microsoft 365 and Google Workspace. Spambrella’s Email Security and User Awareness Training technology is used by some of the World’s largest and most successful security-conscious companies in a multitude of continents and environments. Delivered on a global scale, Spambrella is ready to unify your email security and user awareness training requirements. Think of us as your outsourced email security team! We have deep technical expertise of all other service providers such as MxLogic, Mimecast, Symantec.cloud and know how to migrate you effortlessly. Schedule a demo today with our cybersecurity experts to uncover email threats targeting your email users.Starting Price: $1.00 -
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Palisade
Palisade Technologies
The Next-Generation AI-Assisted DMARC Solution Tired of wrestling with complicated DNS records, cryptic authentication protocols, and endless manual checks? Meet Palisade, the first fully automated DMARC implementation and monitoring platform built with AI at its core. We empower organizations of all technical levels to boost email deliverability and prevent domain spoofing and impersonation.Starting Price: $29.99 -
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DocsCorp
DocsCorp
Document management professionals turn to DocsCorp when they are looking for easy-to-use software that empowers them to work safer and smarter. We are a global brand with more than 500,000 users in over 65 countries. Our product portfolio is a list of must-have technologies that include document creation, email recipient checking, metadata cleaning, document comparison, PDF creation, and image file conversion to PDF, which can be accessed on the desktop, server or cloud. Our products integrate out-of-the-box with leading enterprise content management systems to streamline processes and to drive business efficiency. We offer organizations a combination of on-premises and cloud integrations. We work with industries that are document-centric to help them manage their most critical asset - documents. This includes Government Departments, Legal Services, Financial Services, and Technology companies.Starting Price: $49.50/user -
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LuxSci
Lux Scientiae
LuxSci provides HIPAA-compliant web and email communications services. LuxSci creates uniquely secure and customizable enterprise-grade environments and solutions that enable organizations to confidently meet their specific business and security needs at scale. LuxSci’s HIPAA-compliant email and web solutions are HITRUST certified and include: • Secure High Volume Sending for delivering massive volumes of transactional and marketing emails. • Secure SMTP Connector for encrypting outbound emails sent from Microsoft 365 and Google Workspace. • Secure Email Marketing platform for creating and sending marketing campaigns with ePHI. • Secure Email Hosting for reliable and secure day-to-day business email. • Fully managed Secure Web and Database Hosting for web applications that require compliance. • Secure Forms to safely collect and store sensitive information. LuxSci provides a full suite of secure technology for companies requiring compliant web and email services.Starting Price: $4 per/user/month -
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IRONSCALES
IRONSCALES
IRONSCALES Fights Phishing For You Our self-learning, AI-driven email security platform continuously detects and remediates advanced threats like BEC, credential harvesting, account takeover and more in your company’s mailboxes. FAST! Not All Email Security Solutions are Equal Defending against today’s advanced threats requires a new approach to email security. IRONSCALES’ best-in-class email security platform is powered by AI, enhanced by thousands of customer security teams and is built to detect and remove threats in the inbox. We offer a service that is fast to deploy, easy to operate and is unparalleled in the ability to stop all types of email threats, including advanced attacks like BEC, ATO and more.Starting Price: $4.50 per user per month -
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PhishProtection
DuoCircle
Make your smartest investment to reduce email security threats today, and get a comprehensive email security protection solution with small business pricing. Cybercriminals are targeting CEOs, CFOs, HR, Accounting Departments and regular employees across every industry. As you know Office 365 is extremely limited in the protection that you can configure to stop impersonations, email fraud and phishing. There are only so many custom transport rules you can build to constantly block domains or protect against employee impersonations. PhishProtection works on every email server, device or smtp service. No matter if you are on your phone, or outlook or any email client anywhere, we can protect you. It offers best-in-class security to iOS and Android devices alike.Starting Price: $100/month/user -
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Mailock
Beyond Encryption
Mailock secure email empowers companies to exchange sensitive information with customers, without risking their data. It combines award-winning encryption technology with multi-factor identity authentication to protect confidential emails from cyber risk and keep customer information protected. Compose a secure email from your desktop, browser, or use rules and keywords to initiate the encryption. Set authentication challenges to verify your recipients’ identity so only the right people gain access. Keep audit trails for every message and track your recipients’ activity with real-time read notifications. Recipients can encrypt their replies for free. Empower your customers with a secure thread to your business. Deliver confidential documents to your customers at high volume with automated secure email delivery.Starting Price: $9.30 per user per month -
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Keepnet Labs
Keepnet Labs
Keepnet’s extended human risk management platform empowers organizations to build a security culture with AI-driven phishing simulations, adaptive training, and automated phishing response, helping you eliminate employee-driven threats, insider risks, and social engineering across your organization and beyond. Keepnet continuously assesses human behaviors through AI-driven phishing simulations across email, SMS, voice, QR codes, MFA, and callback phishing to reduce human-driven cyber risks. Keepnet's adaptive training paths are tailored to individual risk levels, roles, and cognitive behaviors, ensuring that secure behaviors are embedded to continuously reduce human cyber risk. Keepnet empowers employees to report threats instantly. Using AI-driven analysis and automated phishing responses, security admins respond 168x faster. Detects employees who frequently click phishing links, mishandle data, or ignore security policies.Starting Price: $1 -
22
RMail
RPost
RMail® is the e-security platform by RPost®, a global leader since 2000. RMail specializes in elegantly easy to use email encryption for privacy and compliance, e-signatures, legal e-delivery proof, secure file sharing, email impostor protection, document rights management, and AI-infused services to prevent data leaks and human e-security errors. RMail’s transmission e-security services are most often used by businesspeople or business systems that send important, sensitive, or consumer-regulated information. These RMail services are generally applied to those messages where the sender needs functionality beyond standard email in terms of (a) easier to use and more automated email encryption for privacy compliance, (b) returning a verifiable proof record of who said what to whom by email, (c) assurance and peace of mind related to delivery and open status of important and time-deadline email, (d) need a timestamped proof of content delivered, (f) need to share large files securely.Starting Price: $7/month/user -
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Libraesva Email Security
Libraesva
Protect your business from disruption, financial loss and reputational damage. Libraesva Email Security stops known and emerging email threats from reaching their target, so you only receive legitimate messages. It provides exceptional email security by integrating cloud email and a secure email gateway with Libraesva’s unique Adaptive Trust Engine that uses AI to learn the usual patterns of behavior for organizations and individuals, continuously assessing the strength of business-to-business trust and proactively holding anomalous traffic. Libraesva Email Security scans and filters all inbound and outbound emails for advanced malware, phishing, business email compromise, spam and more. Proprietary sandboxing technology removes dangerous payloads and active content from attachments, and you can protect users from visiting unsafe sites with active URL analysis that checks every link. -
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EmailAuth.io
EmailAuth
EmailAuth® is a TIER 1 OEM and a market leader in Email Authentication. Available 100% on-premise, or in-country cloud (local cloud) or on AWS/AZURE/GCP globally - We make it easy to unleash the power of email authentication. It is an anti-spoofing, anti-impersonation, and anti-phishing platform that ensures that no one can abuse your domains online. If anyone in the world spoofs your domains, EmailAuth collates data from all across the world to ensure that even a single unauthorized email is caught and rejected by global recipients of the world. It even extracts the IP of the sender, so this threat intelligence can be used to block the attacker across your cyber security fabric (SOAR capable). #StopGettingPhished #BeSpoofProof -
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MailChannels
MailChannels
Secure and deliver email at scale. Use MailChannels to uncover bad actors and prevent spammers from taking advantage of your infrastructure. Monitor outgoing email messages for spam and unusual sending activity. Protect your customer inboxes against spam, phishing, and other email threats. A powerful, intuitive interface makes managing your customers simple and efficient. We operate across multiple clouds and minimize single points of failure to keep our services online, all the time. Get a real human response to your ticket within 30 minutes or less, 24/7/365. MailChannels Outbound Filtering is a cloud-based SMTP relay service which identifies and blocks spammers to ensure reliable email delivery. With Outbound Filtering, you can eliminate email delivery problems caused by IP address blocklisting. Automatically shut down compromised accounts and scripts to improve your security.Starting Price: $79.99 per month -
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Agari
Fortra
Use Trusted Email Identity to protect workers and customers from advanced email attacks. Advanced email attacks target a major security vulnerability that legacy email security controls do not address. Agari gives employees, customers, and partners the confidence to trust their inbox. Unique AI with over 300m daily machine learning model updates understands the good to protect you from the bad. Global intelligence powered by trillions of global email messages provide deep insights into behaviors and relationships. Years of experience defining the email security standards that have been adopted by Global 2000 companies. -
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DuoCircle
DuoCircle
Reliable and secure email hosting services for SMB and Enterprise. Safely processing over 100 million emails per month for our customers. Enhanced gateway security and filtering, inbound email security, email service backup and outbound SMTP using a new high quality infrastructure for top quality results that our customers deserve. Products include, Secure email gateway, email backup MX, email forwarding, outbound SMTP and more. DuoCircle protects against phishing attack with Link Click Protection, a part of the Advanced Threat Defense Suite. You’re covered with Link Click Protection even if site content changes between clicks. You get total protection from phishing and your confidential corporate information is secured because your employees are simply prevented from visiting sites that misuse such information. You get instant feedback in the form of an alert when a suspicious link is about to be visited. -
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Proofpoint Adaptive Email Security
Proofpoint
Proofpoint's Adaptive Email Security provides advanced, integrated protection against phishing, Business Email Compromise (BEC), and other email-borne threats. Powered by behavioral AI, this solution continuously adapts to evolving threats, offering real-time protection before, during, and after email delivery. By consolidating email security into a single platform, organizations can simplify operations, reduce vendor complexity, and achieve significant time and cost savings. It offers advanced features such as internal mail protection, real-time coaching, and unified visibility, making it an essential tool for protecting sensitive communications and ensuring compliance. -
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Barracuda Email Threat Scanner
Barracuda
98% of organizations with Microsoft 365 have malicious emails in their mailboxes. Barracuda Email Threat Scanner has identified more than 10 million spear-phishing attacks sitting in organizations’ email environments. 16,000+ organizations have run this scan and discovered advanced threats in their inboxes. It’s 100% free and you’ll start seeing results within minutes of starting your scan. Our artificial intelligence platform understands email senders' intent to detect social engineering attacks. Get a comprehensive look at each email threat, broken down by time, employee, and threat type, and an overview of your domain DMARC status. Email threats aren’t distributed equally across your employees. Investigate who in your organization is most at risk by looking at their titles, conversation risk factors, and the total number of attacks directed at them. -
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Doppel
Doppel
Detect phishing scams on websites, social media, mobile app stores, gaming platforms, paid ads, the dark web, digital marketplaces, and more. Identify the highest impact phishing attacks, counterfeits, and more with next-gen natural language & computer vision models. Track enforcements with an auto-generated audit trail through our no-code UI that works out of the box. Stop adversaries before they scam your customers and team. Scan millions of websites, social media accounts, mobile apps, paid ads, etc. Use AI to categorize brand infringement and phishing scams. Automatically remove threats as they are detected. Doppel's system has integrations with domain registrars, social media, app stores, digital marketplaces, the dark web, and countless platforms across the Internet. This gives you comprehensive visibility and automated protection against external threats. Doppel offers automated protection against external threats.
