In today's digital world, keeping your emails secure is more important than ever. You face challenges with data protection, compliance, and maintaining privacy. Email encryption software is your ally, safeguarding your communication from prying eyes.
I've independently tested and reviewed various solutions in the SaaS industry. My goal is to give you an unbiased look at the top email encryption tools available. I'll share insights on features, user experience, and how these tools can fit your needs.
As you read, you'll find practical advice to help your team choose the right encryption software. Let's explore the options and find the best fit for your security needs.
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Our team has been testing and reviewing software since 2012. As tech leaders ourselves, we know how difficult—and important—it is to choose the right software.
For this guide, we evaluated tools using hands-on testing and independent research, scoring tools using our selection criteria.
Our reviews reflect our human editorial judgment, not a sales pitch.
Expert reviewers:
- Paulo Gardini MiguelTech Director
Tim FisherVP of AI
Gabriel RosasTech Lead & Software Architect
Christhian GruhnTech Lead & Platform Architect
Best Email Encryption Software Summary
This comparison chart summarizes pricing details for my top email encryption software selections to help you find the best one for your budget and business needs.
| Tool | Best For | Trial Info | Price | ||
|---|---|---|---|---|---|
| 1 | Best for Swiss-based secure emailing | 14-day free trial | From $2.99/user/month (billed annually) | Website | |
| 2 | Best for converging email and chat into one | Free plan available | From $4/user/month (billed annually) | Website | |
| 3 | Best for legal proof of encrypted email delivery | Free demo available | From $7/user/month (billed annually) | Website | |
| 4 | Best for large enterprise email security | 30-day free trial + free demo available | From $3/user/month (min 50 seats) | Website | |
| 5 | Best for advanced threat protection | Free demo available | From $15/user/month (billed annually) | Website | |
| 6 | Best for layered defense against email-borne threats | 14-day free trial | From $0.98/user/month (min 10 seats) | Website | |
| 7 | Best for end-to-end encrypted mailboxes | From $1.34/user/month (billed annually) | Website | ||
| 8 | Best for data protection across networks | From $5/user/month, (billed annually). | Website | ||
| 9 | Best for PGP encryption in Gmail | From $5/user/month (billed annually) | Website | ||
| 10 | Best for healthcare industry | Pricing upon request. | Website |
Best Email Encryption Software Reviews
Below are my detailed summaries of the best email encryption software that made it onto my shortlist. My reviews offer a detailed look at the key features, pros & cons, integrations, and ideal use cases of each tool to help you find the best one for you.
Best for Swiss-based secure emailing- 14-day free trial
- From $2.99/user/month (billed annually)
Visit WebsiteCustomer Rating:4.6/5
ProtonMail offers secure email backed by Swiss privacy laws. ProtonMail is a security-focused email service based in Switzerland, renowned for its robust data protection laws. Leveraging the strengths of Swiss regulations, it provides a platform for secure emailing without compromising user data.
Why I Picked ProtonMail: When I was comparing email platforms known for security, ProtonMail consistently surfaced at the top. It's the Swiss foundation that gives it an edge, making it different from its counterparts. In my opinion, those wanting the assurance of Swiss-based email security should look no further than ProtonMail.
Standout features & integrations:
Features include end-to-end encryption, ensuring emails remain confidential. The self-destructing messages feature enhances privacy further. However, to maintain its security ethos, ProtonMail offers limited third-party integrations.
Integrations include Microsoft Outlook, Apple Mail, Mozilla Thunderbird, Gmail, Yahoo Mail, Outlook.com, AOL Mail, Zoho Mail, Fastmail, and Tutanota.
Pros and Cons
Pros:
- End-to-end encryption
- Benefits from Swiss data protection laws
- Self-destructing email feature
Cons:
- The free version has storage limitations
- No support for POP3, only IMAP
Learn more about ProtonMail:
Best for converging email and chat into one- Free plan available
- From $4/user/month (billed annually)
Visit WebsiteCustomer Rating:4.6/5
Spike combines email structure with the speed of chat messaging. Spike presents an innovative approach to communication, melding the formal structure of email with the immediacy of chat. Its unique layout is designed for those who crave the fluidity of chat but can't detach from the necessity of emails.
Why I Picked Spike: Having evaluated a plethora of email tools, Spike caught my attention due to its distinct offering. I chose it because, in my assessment, it fills a gap that many didn't even recognize existed. The convergence of chat and email in Spike addresses the constant juggle between two platforms, making it the solution I determined as best for a consolidated communication experience.
Standout Features & Integrations:
Features include Conversational Email, which reshapes how users perceive and interact with emails, translating them into a chat-like format. The Priority Inbox is another feather in its cap, organizing emails based on relevance to cut through the noise.
Integrations include Google Drive, Dropbox, OneDrive, Slack, Zoom, Asana, Trello, Microsoft Teams, Evernote, and Todoist.
Pros and Cons
Pros:
- A unique blend of chat and email on one platform
- Priority Inbox effectively categorizes incoming mail
- Embedded tools like calendars and tasks for comprehensive management
Cons:
- Might feel unconventional to some traditional email users
- The absence of a dedicated chat space may not appeal to everyone
Learn more about Spike:
Best for legal proof of encrypted email delivery- Free demo available
- From $7/user/month (billed annually)
Visit WebsiteCustomer Rating:4.8/5
RMail secures email while providing legal proof of delivery. RMail is designed to offer secure and encrypted email services with an added advantage: legal proof of delivery. This makes it a top choice for professionals requiring evidence that their encrypted emails were not only sent but also delivered and opened.
Why I Picked RMail: In my process of selecting email platforms for specific use cases, RMail stood out for its unique offering. It wasn’t just the encryption that was impressive but the provision of legal proof of delivery. I deem RMail to be the prime option for those in professions where such evidence is crucial.
Standout features & integrations:
Features include Registered Email™ technology that provides legal proof of delivery and content. Additionally, RMail offers electronic signatures and large file sharing.
Integrations include Microsoft Outlook, Gmail, Yahoo Mail, AOL Mail, Office 365, Salesforce, Dropbox, Box, Google Drive, and SharePoint.
Pros and Cons
Pros:
- Electronic signature feature
- Provides legal proof of encrypted email delivery
- Integrates with common email platforms
Cons:
- Might be overkill for casual users
- UI could be more intuitive
Learn more about RMail:
Best for large enterprise email security- 30-day free trial + free demo available
- From $3/user/month (min 50 seats)
Visit WebsiteCustomer Rating:4.4/5
Mimecast offers scalable email security for large enterprise networks. Mimecast stands tall as a holistic solution for email security, specially tailored for big enterprises. Given its scalability and comprehensive approach, it's an ideal fit for businesses with vast networks needing robust protection.
Why I Picked Mimecast: Upon evaluating multiple enterprise-grade encryption solutions, Mimecast continually appeared at the top of my list. I chose it due to its sterling reputation and ability to handle the complexities of large-scale operations. Mimecast, in my opinion, is the go-to for enterprises demanding top-tier email security.
Standout Features & Integrations:
Features include a multi-layered approach to email security, encompassing protection from malware, phishing, and impersonation attacks. Additionally, it offers continuity solutions to ensure uninterrupted email access.
Integrations include Microsoft Office 365, Microsoft Exchange, Google Workspace, Outlook, Salesforce, ServiceNow, Splunk, IBM QRadar, Cisco, and Palo Alto Networks.
Pros and Cons
Pros:
- Comprehensive enterprise-level protection
- A multi-layered approach to threats
- A wide array of integrations with enterprise solutions
Cons:
- Complexity requires dedicated IT personnel
- Some features may not be used by every organization
Learn more about Mimecast:
Best for advanced threat protection- Free demo available
- From $15/user/month (billed annually)
Proofpoint protects organizations from advanced email-based threats. Proofpoint Email Protection is a security-focused solution designed to safeguard organizations from email threats. Its robust framework excels in keeping malicious actors at bay, especially in advanced threat scenarios.
Why I Picked Proofpoint Email Protection: During my exploration of email security solutions, Proofpoint Email Protection consistently stood out due to its comprehensive coverage against advanced threats. What makes this tool different is its intricate and layered approach to detecting and combating sophisticated attacks. In my assessment, for organizations keen on ensuring top-tier defense against advanced email threats, Proofpoint remains unmatched.
Standout Features & Integrations:
Features include machine learning algorithms that identify and block threats, detailed reporting on email security incidents, and adaptive security measures that evolve with new threats.
Integrations include Microsoft Office 365, Google Workspace, Microsoft Exchange, Slack, Salesforce, ServiceNow, Splunk, IBM QRadar, Cisco, and Palo Alto Networks.
Pros and Cons
Pros:
- Comprehensive advanced threat protection
- Detailed threat intelligence insights
- Easily integrates with enterprise systems
Cons:
- Might be complex for smaller organizations
- Requires trained personnel for optimal use
Learn more about Proofpoint Email Protection:
Best for layered defense against email-borne threats- 14-day free trial
- From $0.98/user/month (min 10 seats)
Barracuda provides layered email protection against diverse threats. Barracuda champions a multi-faceted approach to email security. By offering multiple layers of defense against varied email threats, it's the ideal solution for businesses wanting a comprehensive shield against malicious actors.
Why I Picked Barracuda: My judgment, after a thorough comparison of email security platforms, consistently leaned towards Barracuda due to its comprehensive layered defense. I believe it stands apart in defending against an array of email-borne threats. For organizations that seek a holistic email protection suite, Barracuda is my top recommendation.
Standout Features & Integrations:
Features Barracuda delivers protection against phishing, malware, and ransomware through its multi-layered approach. Not only does it filter inbound threats, but it also educates users through simulations to recognize potential risks.
Integrations include Microsoft Office 365, Microsoft Exchange, Google Workspace, Outlook, Salesforce, SharePoint, Cisco, Dropbox, Box, and Slack.
Pros and Cons
Pros:
- Comprehensive defense against varied threats
- User awareness training through simulations
- Extensive integration possibilities
Cons:
- Some features may overlap with existing tools
- Requires dedicated staff for maximum efficiency
Learn more about Barracuda:
Best for end-to-end encrypted mailboxes- From $1.34/user/month (billed annually)
Tutanota offers full mailbox encryption with a strong privacy focus. Tutanota is an innovative email service that offers total encryption for users' mailboxes. Prioritizing security and privacy, it emerges as a top choice for those wanting comprehensive protection of their emails from start to finish.
Why I Picked Tutanota: In the process of determining which email services offer superior security features, Tutanota consistently drew my attention. What makes it truly distinct is its unwavering commitment to end-to-end encryption. I'm convinced that for those who value encrypted mailboxes above all, Tutanota is the optimal choice.
Standout Features & Integrations:
Features include automatic end-to-end encryption for emails, even including attachments and calendars. Users don’t need to share or exchange any keys, as the platform manages this internally.
Integrations include Google Calendar, Microsoft Outlook, iCal, Apple Calendar, Thunderbird, Nextcloud, Owncloud, CalDAV, CardDAV, and WebDAV.
Pros and Cons
Pros:
- Comprehensive end-to-end encryption
- Encrypted calendar included
- Open-source code ensures transparency
Cons:
- The interface might be plain for some
- Migration from other platforms can be tedious
Learn more about Tutanota:
Virtru secures sensitive data sharing across multiple networks. Virtru emphasizes the secure sharing of sensitive data across various networks without compromising privacy or compliance. This tool has been engineered to ensure that wherever data travels, it remains protected.
Why I Picked Virtru: In my quest to find solutions that offer impeccable data protection across networks, Virtru emerged as a strong contender. The decision was based on its unique ability to encrypt data in transit, at rest, and even when shared externally. For any organization that frequently shares data across different networks and desires top-notch security, I believe Virtru is the right choice.
Standout Features & Integrations:
Features include persistent data protection, access revocation, and secure forwarding. It integrates efficiently with platforms like Gmail and Microsoft Outlook, making it more adaptable to different business environments.
Integrations include Google Workspace, Microsoft Office 365, Gmail, Outlook, Salesforce, Zendesk, Box, Dropbox, Slack, and Amazon S3.
Pros and Cons
Pros:
- Persistent data protection, even for external sharing
- User-friendly with easy-to-use encryption
- Integrates with major email platforms
Cons:
- Onboarding might require a slight learning curve
- Mobile experience may not be as refined
Learn more about Virtru:
FlowCrypt brings easy PGP encryption to everyday Gmail users. FlowCrypt simplifies the concept of PGP encryption for Gmail users. With an emphasis on user-friendliness, it bridges the gap between advanced email security and everyday Gmail communications.
Why I Picked FlowCrypt: The beauty of FlowCrypt lies in its simplicity, and after comparing various PGP solutions, this one felt the most accessible. I appreciate how it integrates with Gmail, making it the tool I believe is best for individuals wanting to dip their toes into the PGP world without wading into technical complexities.
Standout Features & Integrations:
Features include PGP encryption directly within the Gmail interface. Users can encrypt, decrypt, sign, and verify emails with ease. While primarily designed for Gmail, its compatibility extends to Google Workspace, allowing businesses to take advantage of PGP encryption without the usual hassles.
Integrations include Gmail, Google Workspace, Microsoft Outlook, Yahoo Mail, AOL Mail, Yandex Mail, Mail.ru, Zoho Mail, ProtonMail, and Fastmail.
Pros and Cons
Pros:
- Intuitive PGP encryption within Gmail
- Compatible with Google Workspace
- Ensures end-to-end encrypted communications
Cons:
- Larger teams might require additional setup
- Advanced users might seek more granular controls
Learn more about FlowCrypt:
Zix delivers policy-based encryption tailored for business flexibility. Zix is a powerhouse in the realm of email encryption, specifically focusing on policy-driven solutions. Catering to businesses that require flexibility in setting encryption rules, Zix is the go-to for those who prioritize policy-based controls.
Why I Picked Zix Email Encryption: After comparing several email encryption platforms, I selected Zix primarily because of its robust policy-based features. Its ability to let businesses set their encryption standards is unparalleled. I'm of the opinion that Zix is the frontrunner for organizations keen on dictating their encryption policies.
Standout Features & Integrations:
Features include a policy-based encryption mechanism that lets businesses decide when and how emails are encrypted. The tool also provides automatic scanning of outbound emails to ensure compliance.
Integrations include Microsoft Office 365, Microsoft Exchange, Outlook, Google Workspace, Salesforce, Cisco, IBM Security, McAfee, Symantec, and Barracuda.
Pros and Cons
Pros:
- Advanced policy-based encryption controls
- Automatic scanning for compliance
- Wide-ranging integration capabilities
Cons:
- Might be too complex for small businesses
- Initial setup can be time-consuming
Learn more about Zix Email Encryption:
Other Email Encryption Software
Here are some additional email encryption software options that didn’t make it onto my shortlist, but are still worth checking out:
- 11StartMailBest for privacy-focused email communication
- 12NeoCertifiedBest for integrated secure email APIs
- 13MailfenceBest for end-to-end encrypted communication
- 14KiteworksBest for streamlined secure file sharing
- 15ClearswiftBest for adaptive data loss prevention
- 16LuxSci Email and Web SecurityBest for comprehensive email and web security
- 17Workspace ONE BoxerBest for integrated mobile productivity
- 18AppriverBest for threat intelligence and response
- 19SendSafelyBest for encrypted file transfers and email
- 20PosteoBest for green and sustainable email service
- 21Symantec Email SecurityBest for cloud-based email threat defense
- 22MailvelopeBest for browser-based PGP email encryption
- 23HushmailBest for encrypted webmail with no ads
- 24Egress Secure EmailBest for data loss prevention and protection
- 25SealitBest for identity-based secure communication
How I Evaluate Email Encryption Software
I evaluate these tools in two layers: the encryption and audit controls a tool must have, and the differentiators that separate a HIPAA-ready gateway from one that falls short under scrutiny.
Core Functionality (Table Stakes For This List)
When I'm selecting tools for my list, I rank each one on a scale from 0 (does not offer the functionality) to 5 (excels in this area) for each core functionality listed below. Then, I calculate the tool's total score into a percentage. Each tool needs to achieve a minimum total score of 65% to be considered for inclusion.
- End-to-End Message Encryption: I check whether each tool supports industry-standard protocols like TLS, S/MIME, PGP, and AES-256 for protecting messages both in transit and at rest.
- Policy-Based Encryption Rules: Automated triggers matter here—I look for rule engines that fire encryption based on DLP scans, keywords, or recipient domains without manual user action.
- Email Platform Integration: Each tool should integrate natively with platforms like Microsoft 365, Google Workspace, or Exchange via gateway or add-in rather than requiring a separate interface.
- Secure Recipient Delivery: I evaluate how external recipients access encrypted messages, whether through a secure web portal, one-time passcode, or transparent decryption that avoids friction.
- Key & Certificate Management: Centralized dashboards for issuing, revoking, and rotating keys and certificates are what I look for, especially for teams managing hundreds of mailboxes.
- Compliance & Audit Reporting: Prebuilt audit trails mapped to frameworks like HIPAA or GDPR are a priority, along with exportable logs that satisfy auditor requests during reviews.
Once I have a list of tools that meet this criteria, I consider what sets each platform apart.
Differentiating Factors (What Sets Vendors Apart)
Here's how I compare and contrast different vendors:
Standout Features
Message recall and expiration controls are a big deal—I look for the ability to revoke access or set auto-expiry on a sent message, which matters when sensitive data reaches the wrong recipient. AI-driven content scanning is another separator, where the tool detects PII or PHI in outbound messages and triggers encryption without user action. For teams communicating with external clients, a branded secure portal builds trust and avoids the generic look that often confuses recipients into ignoring encrypted messages entirely.
Beyond Features
Deployment flexibility is something I evaluate closely—some teams need a cloud gateway, while others in regulated sectors require on-premises or sovereign cloud options like GCC High. I also consider ecosystem fit, specifically whether the tool connects to existing DLP platforms, SIEMs, and directory services like Entra ID or Okta for SSO and automated provisioning. Total cost of ownership rounds out my evaluation, since per-user licensing can look affordable until you account for key management, external recipient access, and multi-tenant needs for MSPs.
How to Choose Email Encryption Software
It’s easy to get bogged down in long feature lists and complex pricing structures. To help you stay focused as you work through your unique software selection process, here’s a checklist of factors to keep in mind:
| Factor | What to Consider |
|---|---|
| FactorScalability | What to ConsiderCan the software grow with your team? Consider the number of users it supports and whether it can handle increased email volume without performance issues. |
| FactorIntegrations | What to ConsiderDoes it work with your existing tools? Look for native integrations with your email client, CRM, and other key software to ensure a smooth workflow. |
| FactorCustomizability | What to ConsiderCan you tailor it to your needs? Check if the software allows you to adjust settings and features to fit your specific processes and security requirements. |
| FactorEase of use | What to ConsiderHow intuitive is the interface? Ensure your team can easily navigate and use the software without extensive training or support. |
| FactorImplementation and onboarding | What to ConsiderHow long does it take to set up? Consider the time and resources needed for a successful rollout, including training materials and support from the vendor. |
| FactorCost | What to ConsiderWhat’s the total cost of ownership? Compare pricing plans, including any hidden fees or additional charges for premium features, to find the best fit for your budget. |
| FactorSecurity safeguards | What to ConsiderAre the security measures adequate? Evaluate encryption standards, data protection policies, and any certifications to ensure your data stays safe. |
| FactorCompliance requirements | What to ConsiderDoes it meet industry regulations? Verify that the software complies with relevant standards like GDPR or HIPAA to avoid legal issues and maintain trust. |
What Is Email Encryption Software?
Email encryption software is a tool designed to secure email communications by encoding messages, ensuring only intended recipients can read them. These tools are commonly used by professionals in industries like healthcare, finance, and legal, where data privacy is crucial. Encryption, secure attachments, and access controls help with protecting sensitive information and complying with regulations. Overall, these tools provide peace of mind by safeguarding confidential communications.
Features
When selecting email encryption software, keep an eye out for the following key features:
- End-to-end encryption: Protects email content by ensuring only intended recipients can read the messages, enhancing privacy and security.
- Secure attachments: Encrypts files sent via email, preventing unauthorized access and maintaining data confidentiality.
- Compliance support: Helps organizations meet industry regulations like GDPR or HIPAA, avoiding legal issues and ensuring trust.
- Customizable settings: Allows users to adjust features and security measures to suit specific needs and workflows.
- Integration capabilities: Works seamlessly with existing tools like email clients and CRMs, ensuring smooth workflows and productivity.
- Granular access controls: Provides options to manage who can view, edit, or forward emails, enhancing security management.
- Audit logs: Track access and actions taken on emails, providing transparency and accountability for security purposes.
- User-friendly interface: Ensures ease of use with intuitive navigation, reducing the need for extensive training.
- Self-destructing messages: Automatically deletes emails after a set time, adding an extra layer of privacy for sensitive communications.
- Secure file sharing: Allows users to send large files securely, maintaining confidentiality during transmission.
Benefits
Implementing email encryption software provides several benefits for your team and your business. Here are a few you can look forward to:
- Enhanced security: Protects sensitive information from unauthorized access with features like end-to-end encryption and secure attachments.
- Regulatory compliance: Helps meet industry standards such as GDPR and HIPAA, reducing the risk of legal issues.
- Data privacy: Ensures that only intended recipients can read emails, maintaining confidentiality and trust.
- Improved control: Offers granular access controls, allowing you to manage who can view or edit emails.
- Efficient communication: Integrates with existing tools, ensuring smooth workflows without interrupting productivity.
- Accountability: Provides audit logs to track access and actions, offering transparency in email management.
- User convenience: Features like self-destructing messages and a user-friendly interface make secure communication straightforward and easy.
Costs & Pricing
Selecting between email encryption services requires an understanding of the various pricing models and plans available. Costs vary based on features, team size, add-ons, and more. The table below summarizes common plans, their average prices, and typical features included in email encryption software solutions:
Plan Comparison Table for Email Encryption Software
| Plan Type | Average Price | Common Features |
|---|---|---|
| Plan TypeFree Plan | Average Price$0 | Common FeaturesBasic encryption, limited storage, and essential email support. |
| Plan TypePersonal Plan | Average Price$5-$15/user/month | Common FeaturesEnd-to-end encryption, secure attachments, and basic customer support. |
| Plan TypeBusiness Plan | Average Price$15-$30/user/month | Common FeaturesAdvanced encryption, integration options, and priority customer support. |
| Plan TypeEnterprise Plan | Average Price$30-$50/user/month | Common FeaturesCustom encryption settings, compliance tools, dedicated support, and large storage. |
Email Encryption Software FAQs
Here are some answers to common questions about email encryption software:
How does email encryption work?
Email encryption works by encoding your email content so that only the intended recipient can read it. When you send an encrypted email, it uses a public key to lock the message, and the recipient’s private key unlocks it. This ensures that unauthorized parties can’t access your communications. Make sure your team understands how to manage keys properly to maintain security.
Can I encrypt emails on my mobile device?
Yes, many email encryption software solutions offer mobile support. You can encrypt and send secure emails directly from your smartphone or tablet. Check if the software you’re considering has a mobile app or is compatible with your device’s email client. This ensures you can maintain security even when you’re on the go.
Is email encryption necessary for compliance?
Yes, email encryption is often necessary to meet compliance requirements in industries like healthcare and finance. Regulations like HIPAA and GDPR mandate the protection of sensitive information. Encrypting emails helps your organization avoid penalties and protect data. Always verify that your chosen software meets the specific compliance standards relevant to your industry.
Will email encryption slow down my email performance?
No, modern email encryption software is designed to work efficiently without significant delays. While encryption adds a step to the sending process, most users won’t notice a difference in speed. Ensure your internet connection is stable, and choose a reputable software provider to minimize any performance issues.
What’s Next:
If you're in the process of researching email encryption software, connect with a SoftwareSelect advisor for free recommendations.
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