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The Best Email Encryption Services for 2024

Best Email Encryption Services

Scott Pickard UPDATED: October 23, 2023

Secure your most frequent line of communication with these six email encryption services

As ingrained email is in our modern network infrastructure, all businesses will undoubtedly send swarms of emails daily. If even one gets through the cracks,  then your entire user base might be at risk. You probably haven't put much thought into protecting the contents of your emails before learning about email security services, yet doing so is an essential component of your security infrastructure. These services don’t just encrypt the data on your emails, they’re also fitted with several additional features that extensively increase your security posture when dealing with email data.

Here is our list of the Best Email Encryption Services:

  1. Proofpoint Essentials Makes it possible for small and medium-sized enterprises to use email encryption to automatically encrypt emails, decreasing the risk of data loss. Filters can be used to automatically detect outgoing emails that require encryption, and your users can enable encryption themselves by including a predefined tag in the subject line.
  2. Trustifi All emails sent and received on the platform are encrypted, giving your firm a robust encryption system that can be easily connected via an API or as usual with services such as Office 365, Gmail, and others. Other data loss prevention methods included in Trustifi include real-time tracking and certified delivery information for email delivery, opening, and reading times.
  3. PreVeil Encrypts your emails automatically, allowing you to interact safely with persons both inside and outside your organization. It works with a wide range of systems, including Outlook, Gmail, and Apple Mail.
  4. StartMail A private email exchange platform that works with a variety of existing email clients. The service is available via a webmail interface as well as the well-known IMAP protocol. You can use PGP to quickly encrypt your email and ensure that only the intended recipients can read it.
  5. Barracuda Sentinel Provides very safe, simple email encryption as part of an all-encompassing email security solution. To avoid malware and complex threats, Barracuda combines email encryption with other data protection layers such as filtering, archiving, and data-leak prevention.
  6. ProtonMail Uses open-source, independently certified end-to-end encryption and zero-access encryption to protect your emails. This avoids data breaches and ensures that no one can read or send your email.

The main extra service is malware scanning; which audits your emails upon arrival with your system and scans them thoroughly for malicious content. Flagged emails are deleted or quarantined before even reaching your users.

The combined security these solutions provide when considering both encryption and malware detection makes these services undoubtedly worthwhile. We assume that when an email is sent, it goes in a straight line to its destination—but numerous nefarious technologies may allow the email to be interrupted, rerouted, duplicated, or otherwise successfully stolen. Encryption is the greatest approach to assure the security of the transfer.

This article discusses six of the best email encryption services on the market that truly offer unparalleled security for your emails. In determining which is the best solution for you, it’s important to pay attention to the potential integrations that are possible (if that is something critical to your business). Other important considerations are scale and pricing, and these solutions vary in the target audience between tiny businesses to full-scale global enterprises. Pick the right tool from the list of services below, and you can’t go wrong.

The Best Email Encryption Services

1. Proofpoint Essentials

Proofpoint Essentials

Proofpoint Essentials ensures that small and medium-sized businesses may utilize email encryption to automatically encrypt emails, reducing the risk of data loss. You can use filters to automatically detect outgoing emails that need to be encrypted, and your users can activate encryption themselves by using a predefined tag in the subject line.

Every one of your emails is examined by the system's powerful AI-driven detection engines, which identify and quarantine all known viruses successfully and precisely. Proofpoint provides trustworthy heuristics screening for even greater defense, allowing you to be quickly protected from unknown email threats by recognizing them.

Internal users, including the sender and internal recipients, can write, view, and respond to encrypted emails in their inboxes. You can also easily acquire a detailed breakdown of certain threat types and attack frequency with the aid of Proofpoint Essentials, giving you the information and tools you need to make smart security decisions. To assist protect your employees, the system employs a high-quality email analysis solution as well as personalized threat defense.

Proofpoint provides a 30-day trial upon request, which begins with an appointment with one of their cybersecurity specialists and concludes with them physically installing the system on your infrastructure within 24 hours. The Essentials package for email security is divided into four distinct categories, with the most affordable Beginner plan costing $1.65 per user per month. The higher tiers are more pricey but provide far more features.

2. Trustifi


Your emails are completely safe from malicious third parties owing to Trustifi's AES-256-bit encryption, which provides end-to-end protection. The ‘One-Click Decrypt' solution supplied eliminates the necessity for a time-consuming gateway, implying that no prolonged login is required to transfer encrypted attachments. Trustifi effectively recognizes infections that propagate malware and ransomware and changes authorized technicians through a first-rate notification system while protecting your email traffic from BEC assaults.

Key Features:

  • Gateway-less email encryption
  • Malware and ransomware detection
  • White/blacklisting tools
  • AI-driven safeguarding
  • Compliance assurance

All emails sent and received on the platform are protected by strong encryption, providing your company with a powerful encryption system that can be simply integrated via an API or as standard with services such as Office 365, Gmail, and others. Trustifi also includes other data loss prevention technologies, such as real-time tracking and certified delivery information for email delivery, opening, and reading times. You can demand two-factor authentication for all of your users, or you can build up specific user groups with their own security settings for better system verification.

The system ensures that it conforms to rules such as HIPAA/HITECH, PII, GDPR, FSA, FINRA, LGPD, and CCPA. The solution also provides whitelisting and blacklisting options for enhanced overall security. General options such as integrated spam filtering, spoofing, phishing, and fraud detection significantly improve network security. The Inbound Shield, which uses advanced AI and multiple dynamic and all-encompassing algorithms, will protect your email from dangerous links and attachments.

Although there is no trial version of the product available, you can request a platform demo to acquire a better knowledge of how the system works. Despite having a full integration API to handle several email systems, Trustifi is designed to integrate easily with Office 365 or Google Workspace. You can contact Trustifi directly for a price quote geared to your specific business needs.

3. PreVeil


PreVeil Email automatically encrypts your emails so you can communicate safely with those inside and outside your organization. It connects seamlessly with a variety of systems, including Outlook, Gmail, and Apple Mail. Users continue to use their usual email addresses to keep things easy, and the system nearly eliminates conventional phishing and spoofing tactics by restricting email access to trusted communities. The PreVeil mobile app is available in both the App Store and the Google Play Store. New emails arrive promptly, and users can get informed when new messages arrive. With biometric authentication, only the designated user can send and receive messages.

Key Features:

  • Mobile App
  • Two-factor authentication
  • Biometric security
  • Outlook, Gmail, and Apple Mail integration
  • Notifications

Instead, PreVeil employs concealed, encrypted keys that are stored on your devices. You do not need to create or remember the keys because they are generated automatically. A user's private key stored in the PreVeil Mobile App on a phone is used to temporarily enable encryption and decryption of email messages in a browser running on a PC. A user's private key kept in the PreVeil Mobile App on a phone is used for two-factor authentication to temporarily enable encryption and decryption of email communications in a browser running on a PC.

PreVeil offers a product demo as well as a series of videos that go through the aspects of their product in further detail. For a single personal account with up to 5 GB of secured data storage, the whole solution is free. You can also contact PreVeil for a price on a flexible pricing plan for an Enterprise package, which is meant for enterprises with more than three employees and can work through a connected infrastructure, including an admin console.

4. StartMail


StartMail is a platform for private email exchanges that is compatible with a wide range of existing email clients. The service is accessible via both a webmail interface and the well-known IMAP protocol. You can instantly encrypt your email with PGP and ensure that only the intended recipients can view it. StartMail includes several secure privacy measures. This includes the ability to prevent tracking pixels as well as IP address masking, which keeps your account safe from being tracked.

Key Features:

  • Two-factor authentication
  • Unlimited alias emails
  • vCard upload
  • Tracking protection
  • Password-protected Emails

When you join the site, you are given the option of creating an infinite number of alias emails, which is quite beneficial for assuring quick yet safe access for temporary needs. You can use the platform to password-encrypt individual emails, which can only be opened with the correct password application upon receipt. External link warnings are displayed by default when you click on external links; they show the full URL of the link, which will open in a new tab. You may effortlessly import a vCard file containing your contacts from Google or iOS into StartMail, ensuring that your whole contact list is included all at once for a smooth transition.

StartMail is geared toward personal usage and is thus best suited to small enterprises. For $5 a month, you can create an individual user account with full access to all of the StartMail platform's features, including limitless alias emails. You may also present a custom domain for an additional $0.85 per month, which is ideal for small enterprises that control their business domain and need to get started with a secure email encryption solution.

5. Barracuda Sentinel

Barracuda Sentinel

As part of an all-encompassing email security solution, Barracuda provides very safe, uncomplicated email encryption. More importantly, Barracuda combines email encryption with additional data protection layers, including filtering, archiving, and data-leak prevention, to avoid malware and sophisticated threats. It detects and deletes all fraudulent emails sent from compromised accounts after detecting aberrant email behavior and notifies IT. It can then detect irregularities in communication metadata and content to detect and prevent socially engineered assaults.

Key Features:

  • AI-Driven Behavior analysis
  • Account Takeover Protection
  • Domain Fraud Protection
  • Detailed reporting
  • API-based Architecture

As part of the multi-layered email security system, the solution includes AI-based defense against spear phishing, account takeover, and compromised business emails. Barracuda Sentinel's AI engine can evaluate past emails and identify users' unique communication habits by utilizing a cutting-edge API-based architecture. The technology is also designed to block phishing efforts that gather login information for account takeover.

A few of the partnered stores sell Barracuda Sentinel licenses. The cost of each license varies depending on where you obtain them, but it is usually around $3.99 per user each month. The solution is designed for Office 365 environments, although it may be used alongside any email service. Because of pre-existing plugins, it will be simple to incorporate into your Microsoft email suite. You can access additional email solutions via the flexible API.

6. Proton Mail

Proton Mail

Proton protects your emails with open-source, independently verified end-to-end encryption and zero-access encryption. This prevents data breaches and assures that no one can access your incoming and outgoing email. To prevent tampering with your contacts or reading any information you provide, including your contacts' phone number or address. You can send secure emails to recipients who do not have Proton Mail by entering a password in the composer before clicking send. This ensures that neither Proton nor their email provider will be able to see them.

Key Features:

  • Encrypted contacts
  • Two-factor authentication
  • Tracking protection
  • Password-protected Emails
  • Open-source

All extra data associated with your account is encrypted by the system. This allows you to add and organize all of your contacts' information in one convenient location while remaining confident that only you have access to it. Furthermore, you can use the system to read emails without allowing advertisers to track you, construct a profile of you, or send you ads based on your email behavior. By using the web app's automated filtering of tracking pixels and IP address obscuration, you may read your emails without revealing any personal information.

ProtonMail features a free version for personal use, and the software is open-source, which means it has a wide range of integration options. Businesses can choose between a 15 GB data storage option for $6.99/user per month or a 500 GB individual data storage option for $10.99/user per month, which includes various expansions. If your user requirements exceed those indicated, you can contact the sales team directly for a unique pricing offer.

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