Best Email Encryption Software - Page 5

Conbool

Conbool is a multi-tenant email security platform that turns standard business email into a secure, compliant and brand-safe communication channel. It combines automatic S/MIME and PGP encryption including certificate management, a secure message portal, AI-powered spam and threat protection and centralized email signatures and disclaimers in a single gateway. Conbool is hosted in the EU or on-premises and integrates seamlessly with Microsoft 365 and existing mail servers.

CryptShare

From the very beginning, we have designed Cryptshare as a secure digital transfer service. As such, Cryptshare makes sure your data is protected at all points of risk on the journey from sender to recipient, meaning from the time it leaves the relative safety of your firewall until it reaches its intended destination.

Difenso

Difenso offers major groups, small companies and individuals an innovative and uniquely designed solution, easy to implement to protect all shared data.

EncryptTitan

Encrypt Titan

Encrypt Titan is a comprehensive, cloud-based email and web security platform designed for MSPs, enterprises, and regulated industries. It combines email encryption, advanced threat protection, archiving, and DNS filtering into a single solution, helping organizations protect sensitive communications, stop phishing and ransomware, and meet compliance standards such as HIPAA, GLBA, GDPR, and PCI DSS. With policy-based automation, Secure Titan ensures messages containing regulated data are encrypted without user action, while threat intelligence, anti-spam, and anti-malware engines block evolving cyber threats. The platform also includes searchable archiving, compliance reporting, and branded partner portals, making it an OEM-ready and MSP-friendly solution. Secure Titan enables organizations to reduce risk, simplify compliance, and protect end users — all with flexible licensing, multi-tenant management, and seamless integration with Microsoft 365, Google Workspace, and other enterprise systems.

EntrustedMail Email Encryption

EntrustedMail is a SOC2 security platform offering email and web protection, with a strong focus on automatic email encryption. Our email encryption service helps organizations comply with regulations, such as HIPAA, GLBA, FERPA, SOX, GDPR, PCI, CJIS and secure sensitive communications. Key Features & Capabilities; Automatic / Policy-Based Encryption: Emails that trigger compliance or regulatory rules (e.g. containing PHI, SSNs, financial data) are automatically encrypted, reducing human error. entrustedmail.com Send to Anyone Encryption: Adapt to the recipient’s capabilities (TLS, secure portal, etc.) so recipients can view messages even if they don’t have special software. Audit & Tracking: Senders can view status (delivered, read, printed, deleted, replied) via audit links. Message Recall: Ability to recall encrypted messages (remove them from portal) if sent in error. Data Loss Prevention (DLP) : Scanning content of emails and attachments for regulated data (e.g. PHI, financial info), triggering encryption as needed. Branded Portal: You can customize the secure portal (and notification emails) to reflect your organization’s branding. Outlook Add-in: Offers seamless integration: with a “point, click, encrypt” action from within Outlook. TLS Verification & Host Checks: When sending over TLS, ensures the TLS version comply with regulatory requirements.

Galaxkey Email Encryption

Galaxkey Email Encryption offers simple and convenient end-to-end encryption for business emails.

gpg4o

gpg4o is IT-Security that helps protect your sensitive mail content in Microsoft Outlook 2010/2013/2016 and is suitable for both private and enterprise usage. gpg4o is based on OpenPGP encryption by using GnuPG(GPG) and is compatible to other OpenPGP based implementations like enigmail, Symantec Encryption (former PGP Desktop) and Symantec Encryption Gateway (former PGP Universal), GPGMail, KMAil and others.

LB Mail Sitter

Mailock

Mailock is a secure email (outbound email security) and delivery-evidence solution that helps organisations send encrypted messages and files via standard email while recording key delivery and access events for governance and compliance use cases. Mailock sits in the secure communications category, supporting teams that need to exchange sensitive or regulated information with customers, clients, patients, or partners without moving them into a separate portal-first workflow. Typical users include compliance, risk, customer communications, IT, and service teams in regulated and privacy-sensitive sectors such as financial services, insurance, legal, healthcare, and utilities. Organisations use Mailock to protect information in transit and to control access to message content and attachments after sending. It supports use cases such as sending statements and disclosures, claims and policy documents, client instructions and identifiers, invoices and contracts, case files, and other communications where confidentiality, recipient assurance, and evidence of delivery or access may be required for oversight. Mailock is also used to improve auditability of email-based delivery by capturing records across the message lifecycle (for example, dispatch, delivery to inbox, and access to secured content), which can be referenced when delivery is later queried. Key capabilities and value propositions include: Encryption and access control: Encrypts email content and attachments, with configurable access policies (such as time limits or withdrawal of access) to manage post-send exposure. Recipient verification options: Provides configurable identity or recipient-assurance steps (for example, knowledge-based challenges) when higher assurance is needed. Delivery and access records: Creates a tracked record of delivery lifecycle events and recipient interaction to support internal controls, audit, and dispute handling. Workflow and deployment options: Supports sending from common email environments (including Microsoft Outlook via add-in) and web-based sending for users who do not use Outlook. Administration and governance: Offers organisational management features such as policy controls, user administration, and reporting to help standardise secure delivery practices across teams.

Mailvelope Business

Mailvelope is a browser extension that provides end-to-end encryption for your existing email address. Available on Chrome, Firefox and Edge. Encrypt your emails without having to change your email provider! Encryption and decryption take place exclusively on the end devices. This means that your private data will never leave your device unencrypted. Communicating securely with organizations worldwide by protecting your emails. With Mailvelope Business you get access to support under a service level agreement. For organizations using Google Workspace, Mailvelope Business offers a connection to the Gmail API: this makes it possible to send PGP emails with just one click and also decrypting PGP/MIME messages is comfortably solved. Additional Mailvelope controls make it easier to perform typical tasks such as forwarding encrypted emails and handling encrypted attachments.

Mail Zipper

MemberProtect

Uses encryption to secure databases at the cell level and can encrypt email messages and flat files on your network.

Odyssey Relay

ChatOdyssey is a B2B privacy infrastructure platform providing encrypted email and phone relays, alias management, and custom domain support—without requiring users to purchase their own domain. Designed for businesses, professionals, and privacy-first teams, ChatOdyssey helps organizations protect employee communication, reduce spam, and mask sensitive contact points across platforms. With secure message forwarding, scalable alias management, and robust API support, ChatOdyssey enables enterprises to build trust with customers while safeguarding internal operations. It’s ideal for industries like legal, journalism, healthcare, recruiting, and customer service—where discretion, anonymity, and compliance matter.

OpenText Core Email Encryption​

OpenText Core Email Encryption is a secure email encryption solution that helps organizations protect sensitive communications and attachments from unauthorized access, interception, and data leaks. Designed for businesses of all sizes, it enables users to send encrypted emails easily while helping organizations meet regulatory compliance and data privacy requirements. With seamless integration into Microsoft 365 and existing email environments, OpenText Core Email Encryption simplifies secure communication without disrupting user workflows or requiring complex administration. Key benefits include: • Protect sensitive emails and attachments with strong encryption • Help meet compliance requirements such as HIPAA, GDPR, PCI DSS, and other data privacy regulations • Simplify secure email delivery with an intuitive user experience • Reduce the risk of data breaches, phishing exposure, and accidental data loss • Seamless integration with Microsoft 365 and existing email platforms • Secure message access for internal and external recipients • Centralized policy management and encryption controls • Cloud-based deployment for simplified administration and scalability • Improve customer trust by securing confidential communications OpenText Core Email Encryption helps organizations secure business communications, strengthen compliance, and protect sensitive data across hybrid and cloud email environments.