# Best Enterprise Email Encryption Software *By [Lauren Worth](https://research.g2.com/insights/author/lauren-worth)* Products classified in the overall Email Encryption category are similar in many regards and help companies of all sizes solve their business problems. However, enterprise business features, pricing, setup, and installation differ from businesses of other sizes, which is why we match buyers to the right Enterprise Business Email Encryption to fit their needs. Compare product ratings based on reviews from enterprise users or connect with one of G2's buying advisors to find the right solutions within the Enterprise Business Email Encryption category. In addition to qualifying for inclusion in the Email Encryption Software category, to qualify for inclusion in the Enterprise Business Email Encryption Software category, a product must have at least 10 reviews left by a reviewer from an enterprise business. ## How Many Email Encryption Software Products Does G2 Track? **Total Products under this Category:** 86 ### Category Stats (May 2026) - **Average Rating**: 4.56/5 - **New Reviews This Quarter**: 167 - **Buyer Segments**: Small-Business 75% │ Mid-Market 22% │ Enterprise 3% - **Top Trending Product**: Proton Mail For Business (+0.103) *Last updated: May 18, 2026* ## How Does G2 Rank Email Encryption Software Products? **Why You Can Trust G2's Software Rankings:** - 30 Analysts and Data Experts - 3,800+ Authentic Reviews - 86+ Products - Unbiased Rankings G2's software rankings are built on verified user reviews, rigorous moderation, and a consistent research methodology maintained by a team of analysts and data experts. Each product is measured using the same transparent criteria, with no paid placement or vendor influence. While reviews reflect real user experiences, which can be subjective, they offer valuable insight into how software performs in the hands of professionals. Together, these inputs power the G2 Score, a standardized way to compare tools within every category. --- **Sponsored** ### IRONSCALES IRONSCALES is a cloud-native email security platform that helps enterprises and MSPs close gaps with mailbox-level detection, autonomous remediation, and built-in user training. It combines AI and human insights that continuously learn from user behavior, message context, and analyst feedback to identify advanced threats like BEC, account takeovers, impersonation, and other advanced phishing attacks. IRONSCALES is headquartered in Atlanta, Georgia and is proud to serve more than 17,000 customers globally. IRONSCALES leverages adaptive AI and its Agentic AI engine, Themis, to drive autonomous, mailbox-level remediation with customizable automation. Smart clustering, context-driven decisioning, and user-reported inputs enable Themis to remediate threats in real time while preserving analyst oversight and control. Designed for rapid deployment via API, IRONSCALES integrates with existing security stacks without requiring MX record changes. To reduce risk, improve SOC efficiency, and support a proactive security culture, its comprehensive capabilities also include: - Phishing Simulations - Security Awareness Training - DMARC management - Deepfake Live Protection - Generative AI tools [Visit website](https://www.g2.com/external_clickthroughs/record?secure%5Bad_program%5D=ppc&secure%5Bad_slot%5D=category_product_list&secure%5Bcategory_id%5D=1627&secure%5Bdisplayable_resource_id%5D=1833&secure%5Bdisplayable_resource_type%5D=Category&secure%5Bmedium%5D=sponsored&secure%5Bplacement_reason%5D=neighbor_category&secure%5Bplacement_resource_ids%5D%5B%5D=1833&secure%5Bplacement_resource_ids%5D%5B%5D=1628&secure%5Bprioritized%5D=false&secure%5Bproduct_id%5D=127324&secure%5Bresource_id%5D=1627&secure%5Bresource_type%5D=Category&secure%5Bsource_type%5D=category_page&secure%5Bsource_url%5D=https%3A%2F%2Fwww.g2.com%2Fcategories%2Femail-encryption%2Fenterprise&secure%5Btoken%5D=a4f6214b7af8acd4a6a3a8d08fafc8971560877dfd0a4a2ae5bb69082608d37f&secure%5Burl%5D=https%3A%2F%2Fsecure.ironscales.com%2Fdemo%3Futm_source%3Dg2%26utm_medium%3Daffiliate%26utm_campaign%3Dg2-ads&secure%5Burl_type%5D=book_demo) --- ## What Are the Top-Rated Email Encryption Software Products in 2026? ### 1. [Proofpoint Core Email Protection](https://www.g2.com/products/proofpoint-core-email-protection/reviews) Proofpoint’s Core Email Protection (CEP) stops 99.99% of all email threats before they become compromises. It stops the broadest range of email cyberattacks, spam and graymail. For security analysts, it provides integrated search and alert-based workflows, automatically remediates user reported emails, and coaches users in-the-moment. Core Email Protection leverages Nexus language models, relationship graphs, machine learning and computer vision to stop advanced email threats. It’s powered by unparallelled email threat data from over 3 trillion emails scanned per year, to automatically stop threats like BEC, account takeovers, QR code phishing, impersonations, and lateral phishing. Customers choose how to deploy Core Email Protection, with SEG and API options available. SEG provides the highest security via defense in depth, with pre-delivery, post-delivery, and click time protection. API is a faster deployment, and augments M365 with the same detection engine to block threats, spam, and graymail. **Average Rating:** 4.6/5.0 **Total Reviews:** 572 **How Do G2 Users Rate Proofpoint Core Email Protection?** - **Has the product been a good partner in doing business?:** 9.2/10 (Category avg: 9.1/10) - **Quality of Support:** 8.8/10 (Category avg: 8.8/10) - **Ease of Admin:** 8.5/10 (Category avg: 9.1/10) - **Ease of Use:** 8.5/10 (Category avg: 9.0/10) **Who Is the Company Behind Proofpoint Core Email Protection?** - **Seller:** [Proofpoint](https://www.g2.com/sellers/proofpoint) - **Company Website:** https://www.proofpoint.com/us - **Year Founded:** 2002 - **HQ Location:** Sunnyvale, CA - **Twitter:** @proofpoint (31,162 Twitter followers) - **LinkedIn® Page:** https://www.linkedin.com/company/proofpoint (5,020 employees on LinkedIn®) **Who Uses This Product?** - **Who Uses This:** Information Security Analyst, IT Security Engineer - **Top Industries:** Financial Services, Hospital & Health Care - **Company Size:** 66% Enterprise, 30% Mid-Market #### What Are Proofpoint Core Email Protection's Pros and Cons? **Pros:** - Protection (88 reviews) - Email Security (81 reviews) - Ease of Use (66 reviews) - Effective (52 reviews) - Security (49 reviews) **Cons:** - Outdated Interface (28 reviews) - User Interface (24 reviews) - Email Issues (23 reviews) - Complexity (20 reviews) - False Positives (19 reviews) ### 2. [Virtru Email Encryption](https://www.g2.com/products/virtru-email-encryption/reviews) Secure data directly from your inbox with Virtru. Users can easily encrypt emails and attachments with just one click, protecting sensitive data such as personally identifiable information (PII), intellectual property, and other regulated information. Seamlessly integrating with platforms like Gmail and Microsoft Outlook, Virtru empowers organizations to meet compliance requirements for HIPAA, GDPR, CJIS, CMMC 2.0, ITAR and other data privacy regulations, without disrupting existing workflows. Virtru provides full control over email content even after it’s been sent. Users can set expiration dates, revoke access, and track where emails are shared, ensuring total visibility and control over sensitive information. With granular access control and audit trails, Virtru simplifies data protection for enterprises and small businesses alike. Ideal for industries such as healthcare, financial services, government, and education, Virtru empowers your teams to confidently share sensitive information without sacrificing security. **Average Rating:** 4.4/5.0 **Total Reviews:** 403 **How Do G2 Users Rate Virtru Email Encryption?** - **Has the product been a good partner in doing business?:** 8.9/10 (Category avg: 9.1/10) - **Quality of Support:** 8.8/10 (Category avg: 8.8/10) - **Ease of Admin:** 8.9/10 (Category avg: 9.1/10) - **Ease of Use:** 9.1/10 (Category avg: 9.0/10) **Who Is the Company Behind Virtru Email Encryption?** - **Seller:** [Virtru](https://www.g2.com/sellers/virtru) - **Company Website:** https://virtru.com - **Year Founded:** 2012 - **HQ Location:** Washington, DC - **Twitter:** @virtruprivacy (1,790 Twitter followers) - **LinkedIn® Page:** https://www.linkedin.com/company/virtru/ (229 employees on LinkedIn®) **Who Uses This Product?** - **Who Uses This:** Administrative Assistant, IT Manager - **Top Industries:** Hospital & Health Care, Health, Wellness and Fitness - **Company Size:** 45% Mid-Market, 37% Small-Business #### What Are Virtru Email Encryption's Pros and Cons? **Pros:** - Ease of Use (80 reviews) - Security (78 reviews) - Encryption (66 reviews) - Email Encryption (56 reviews) - Secure Communication (45 reviews) **Cons:** - Email Issues (55 reviews) - Email Encryption Issues (44 reviews) - Access Issues (29 reviews) - Encryption Issues (26 reviews) - Access Limitations (20 reviews) ### 3. [Check Point Harmony Email & Collaboration](https://www.g2.com/products/check-point-harmony-email-collaboration/reviews) Check Point Harmony Email & Collaboration, protects enterprise data by preventing targeted attacks on SaaS applications and cloud-based email. **Average Rating:** 4.6/5.0 **Total Reviews:** 464 **How Do G2 Users Rate Check Point Harmony Email & Collaboration?** - **Has the product been a good partner in doing business?:** 9.3/10 (Category avg: 9.1/10) - **Quality of Support:** 9.1/10 (Category avg: 8.8/10) - **Ease of Admin:** 9.3/10 (Category avg: 9.1/10) - **Ease of Use:** 9.1/10 (Category avg: 9.0/10) **Who Is the Company Behind Check Point Harmony Email & Collaboration?** - **Seller:** [Check Point Software Technologies](https://www.g2.com/sellers/check-point-software-technologies) - **Year Founded:** 1993 - **HQ Location:** Redwood City, CA - **Twitter:** @CheckPointSW (71,000 Twitter followers) - **LinkedIn® Page:** https://www.linkedin.com/company/check-point-software-technologies/ (8,356 employees on LinkedIn®) - **Ownership:** NASDAQ:CHKP **Who Uses This Product?** - **Who Uses This:** IT Manager, Systems Administrator - **Top Industries:** Information Technology and Services, Computer & Network Security - **Company Size:** 59% Mid-Market, 24% Enterprise #### What Are Check Point Harmony Email & Collaboration's Pros and Cons? **Pros:** - Email Security (94 reviews) - Security (83 reviews) - Protection (74 reviews) - Ease of Use (50 reviews) - Phishing Protection (45 reviews) **Cons:** - False Positives (29 reviews) - Complexity (23 reviews) - Complex Setup (22 reviews) - Limited Features (18 reviews) - Configuration Difficulties (17 reviews) ### 4. [Paubox](https://www.g2.com/products/paubox/reviews) Paubox is a HIPAA compliant email security platform designed for healthcare organizations. It provides outbound email encryption and AI-powered inbound email protection, helping organizations safeguard protected health information (PHI) without changing how staff or patients use email. Email remains a critical communication tool in healthcare, but standard platforms like Google Workspace and Microsoft 365 are not HIPAA compliant on their own. Paubox makes compliance automatic and enhances security to defend against evolving phishing and malware attacks, all while maintaining a seamless user experience. Paubox serves small to mid-sized healthcare organizations, clinics, and IT teams seeking reliable compliance, reduced risk, and simple management. Key capabilities: - Automatic outbound encryption: Every message is encrypted by default; recipients read emails directly in their inbox, without portals or passwords - AI-powered inbound email security: Detects and blocks phishing, spoofing, and malware using generative AI analysis - Seamless integration: Works with Google Workspace, Microsoft 365, and Microsoft Exchange without new workflows or domain changes - Compliance and control: Supports HIPAA compliance and minimizes human error in handling PHI - Additional tools: Archiving, Data Loss Prevention, Paubox Email API, and Paubox Marketing Benefits: - Simplifies compliance management and reduces IT workload - Improves patient and staff experience with frictionless secure email - Strengthens protection against modern email threats Paubox enables healthcare organizations to confidently use email as a secure, compliant, and user-friendly communication channel, eliminating guesswork for staff and helping IT teams protect against data breaches and compliance risk. **Average Rating:** 4.9/5.0 **Total Reviews:** 550 **How Do G2 Users Rate Paubox?** - **Has the product been a good partner in doing business?:** 9.8/10 (Category avg: 9.1/10) - **Quality of Support:** 9.8/10 (Category avg: 8.8/10) - **Ease of Admin:** 9.6/10 (Category avg: 9.1/10) - **Ease of Use:** 9.8/10 (Category avg: 9.0/10) **Who Is the Company Behind Paubox?** - **Seller:** [Paubox](https://www.g2.com/sellers/paubox) - **Year Founded:** 2015 - **HQ Location:** San Francisco, CA - **Twitter:** @PauboxHQ (16,587 Twitter followers) - **LinkedIn® Page:** https://www.linkedin.com/company/4821384/ (45 employees on LinkedIn®) **Who Uses This Product?** - **Who Uses This:** Owner, CEO - **Top Industries:** Mental Health Care, Hospital & Health Care - **Company Size:** 83% Small-Business, 15% Mid-Market #### What Are Paubox's Pros and Cons? **Pros:** - Ease of Use (218 reviews) - Security (176 reviews) - Customer Support (147 reviews) - Email Security (139 reviews) - Setup Ease (138 reviews) **Cons:** - Expensive (51 reviews) - Email Issues (32 reviews) - Difficult Setup (25 reviews) - Email Encryption Issues (18 reviews) - Encryption Issues (13 reviews) ### 5. [Proton Mail For Business](https://www.g2.com/products/proton-mail-for-business/reviews) Proton Mail for Business is a secure email and calendar solution tailored specifically for small and medium-sized businesses (SMBs). This platform enables users to send, receive, organize, and manage professional email and calendar communications while ensuring built-in privacy and encryption. Designed to support critical business communication workflows, Proton Mail for Business protects sensitive information from unauthorized access and assists organizations in meeting data privacy and compliance requirements. Its features cater to SMBs looking to enhance email security, centralize user management, and integrate encrypted messaging with productivity tools like calendar scheduling. The product's core capabilities focus on providing a robust business email experience. With end-to-end encryption, email content remains confidential, ensuring that only the intended senders and recipients can read messages. Proton Mail cannot decrypt stored emails, even for compliance or support purposes, which reinforces its commitment to user privacy. Additionally, businesses can utilize custom domains for branded email addresses, enhancing professionalism and brand identity. Integrated calendar tools allow teams to create, share, and schedule events seamlessly alongside email, reducing the need for multiple disparate applications. Proton Mail for Business also includes a variety of productivity and workflow features designed to streamline communication. Advanced inbox organization tools, such as filters and folders, automatically sort incoming mail, while labels help categorize messages for efficient workflow management. Email automation capabilities enable users to schedule messages, create autoresponders, and snooze emails, which is particularly beneficial for managing busy inboxes. Furthermore, the AI-assisted writing support, Proton Scribe, aids in drafting and proofreading messages without compromising privacy, ensuring that sensitive content remains secure. Security and compliance are paramount in Proton Mail for Business, which is why it offers strong regulatory support for GDPR, HIPAA, CCPA, and other privacy regulations through its default end-to-end encryption and zero-access architecture. Hosted under Swiss privacy laws, the platform provides additional legal protections compared to other jurisdictions, safeguarding user data from forced access. The centralized admin panel allows for efficient user management, enabling administrators to add or remove users, enforce two-factor authentication, and manage permissions across the business domain. Advanced threat protection through Proton Sentinel combines AI and human analysis to identify and block potential account breaches and other security threats. By combining encrypted communication with practical organizational tools and administrative oversight, Proton Mail for Business positions itself as a comprehensive and secure email platform for SMBs. Its focus on privacy and compliance, along with its ability to enhance professional communication continuity and improve team productivity, makes it a valuable solution for businesses prioritizing secure digital communications. **Average Rating:** 4.6/5.0 **Total Reviews:** 251 **How Do G2 Users Rate Proton Mail For Business?** - **Has the product been a good partner in doing business?:** 9.3/10 (Category avg: 9.1/10) - **Quality of Support:** 8.6/10 (Category avg: 8.8/10) - **Ease of Admin:** 9.2/10 (Category avg: 9.1/10) - **Ease of Use:** 9.0/10 (Category avg: 9.0/10) **Who Is the Company Behind Proton Mail For Business?** - **Seller:** [Proton AG](https://www.g2.com/sellers/proton-ag) - **Company Website:** https://proton.me/ - **Year Founded:** 2014 - **HQ Location:** Plan-les-Ouates, Geneva, Switzerland - **Twitter:** @ProtonPrivacy (361,721 Twitter followers) - **LinkedIn® Page:** https://www.linkedin.com/company/protonprivacy/ (844 employees on LinkedIn®) **Who Uses This Product?** - **Who Uses This:** Owner - **Top Industries:** Information Technology and Services, Computer Software - **Company Size:** 34% Small-Business, 16% Mid-Market #### What Are Proton Mail For Business's Pros and Cons? **Pros:** - Ease of Use (3 reviews) - Encryption (2 reviews) - Reliability (2 reviews) - Security (2 reviews) - Clean Interface (1 reviews) **Cons:** - Compatibility Issues (1 reviews) - Complex Processes (1 reviews) - Email Issues (1 reviews) - Improvement Needed (1 reviews) - Inefficient Search Functionality (1 reviews) ### 6. [Kiteworks](https://www.g2.com/products/kiteworks/reviews) Kiteworks’ mission is to empower organizations to effectively manage risk in every send, share, receive, and save of sensitive content. To this end, we created a platform that delivers content governance, compliance, and protection to customers. The platform unifies, tracks, controls, and secures sensitive content moving within, into, and out of their organization, significantly improving risk management and ensuring regulatory compliance on all sensitive content communications. Any professional or organization who sends, shares, receives or saves sensitive content should govern and protect it with Kiteworks. It’s as simple as that. With Kiteworks, CIOs and CISOs gain complete visibility, compliance and control over IP, PII, PHI, and other sensitive content across all 3rd party communication channels, including email, file sharing, mobile, enterprise apps, web portals, SFTP, and MFT. When users click the Kiteworks button, they know it’s the safe, secure way to share sensitive information with the outside world. With on-premise, private cloud, hybrid and FedRAMP deployment options, the Kiteworks platform provides the security and governance CISOs need to protect their organizations, mitigate risk, and adhere to rigorous compliance regulations such as NIST 800-171, HIPAA, SOX, GDPR, GLBA, FISMA, and others. **Average Rating:** 4.4/5.0 **Total Reviews:** 117 **How Do G2 Users Rate Kiteworks?** - **Has the product been a good partner in doing business?:** 8.0/10 (Category avg: 9.1/10) - **Quality of Support:** 8.6/10 (Category avg: 8.8/10) - **Ease of Admin:** 8.3/10 (Category avg: 9.1/10) - **Ease of Use:** 8.9/10 (Category avg: 9.0/10) **Who Is the Company Behind Kiteworks?** - **Seller:** [Kiteworks](https://www.g2.com/sellers/kiteworks) - **Year Founded:** 1999 - **HQ Location:** Palo Alto, CA - **Twitter:** @Kiteworks (3,458 Twitter followers) - **LinkedIn® Page:** https://www.linkedin.com/company/33337/ (363 employees on LinkedIn®) - **Phone:** 650-485-4300 **Who Uses This Product?** - **Top Industries:** Information Technology and Services - **Company Size:** 25% Small-Business, 21% Enterprise #### What Are Kiteworks's Pros and Cons? **Pros:** - Security (98 reviews) - Secure Sharing (74 reviews) - Protection (67 reviews) - Secure Communication (64 reviews) - Secure File Sharing (64 reviews) **Cons:** - Complex Usability (60 reviews) - Complexity (51 reviews) - Poor Interface Design (45 reviews) - UX Improvement (43 reviews) - Poor UI Design (42 reviews) ### 7. [Zivver Email Encryption](https://www.g2.com/products/zivver-email-encryption/reviews) Zivver provides secure email communications for effortless compliance. Founded in the Netherlands in 2015, Zivver is trusted by over 10,000 organizations globally to prevent data leaks caused by human error and ensure compliance. Zivver’s platform offers key features such as AES-256 encryption, keyless encryption, and multi-factor authentication, making it a robust tool for protecting sensitive data. Its integration with popular email clients like Microsoft 365 and Gmail, along with capabilities like secure file transfer up to 5TB and e-signatures directly within email, makes Zivver both user-friendly and highly secure. By offering smart prevention rules, secure communication options, and seamless integration with existing workflows, Zivver not only enhances security but also improves efficiency and productivity, helping organizations remain compliant with global data protection regulations. **Average Rating:** 4.4/5.0 **Total Reviews:** 50 **How Do G2 Users Rate Zivver Email Encryption?** - **Has the product been a good partner in doing business?:** 9.0/10 (Category avg: 9.1/10) - **Quality of Support:** 8.6/10 (Category avg: 8.8/10) - **Ease of Admin:** 8.7/10 (Category avg: 9.1/10) - **Ease of Use:** 9.0/10 (Category avg: 9.0/10) **Who Is the Company Behind Zivver Email Encryption?** - **Seller:** [Zivver](https://www.g2.com/sellers/zivver) - **Year Founded:** 2015 - **HQ Location:** Amsterdam, Noord-Holland - **Twitter:** @zivver_en (278 Twitter followers) - **LinkedIn® Page:** https://www.linkedin.com/company/zivver (84 employees on LinkedIn®) **Who Uses This Product?** - **Top Industries:** Hospital & Health Care, Mental Health Care - **Company Size:** 52% Small-Business, 26% Mid-Market #### What Are Zivver Email Encryption's Pros and Cons? **Pros:** - Ease of Use (30 reviews) - Email Security (24 reviews) - Security (22 reviews) - Email Encryption (17 reviews) - Encryption (17 reviews) **Cons:** - Email Issues (17 reviews) - Difficult Setup (10 reviews) - Access Issues (9 reviews) - Technical Issues (8 reviews) - Access Control (5 reviews) ## What Is Email Encryption Software? [Email Security Software](https://www.g2.com/categories/email-security) ## What Software Categories Are Similar to Email Encryption Software? - [Secure Email Gateway Software](https://www.g2.com/categories/secure-email-gateway) - [Email Anti-spam Software](https://www.g2.com/categories/email-anti-spam) - [Cloud Email Security Solutions](https://www.g2.com/categories/cloud-email-security)