Email Encryption Software
Alternatives to Lockbin
Lockbin sends private email messages and files through a browser, supporting Linux, macOS, Windows, and the web without requiring installation. Recipients use a unique URL and password, or passwordless links for known recipients. TLS protects messages in transit, AES-256 protects them at rest, and uncollected messages are destroyed after six months. Premium and Enterprise plans can include a Business Associate Agreement by request. The free plan provides one user and 25 MB attachments; Premium starts at $10/user/mo and allows uploads up to 100 MB.
- 01 MailHippo
MailHippo is aimed at healthcare providers, administrators, business associates, counselors, and other covered entities.
From $4.95/mo Free trial Web · Windows · API8.8 Visit Specs - 02 SecureMyEmail From $2.50/mo Free plan Web · Windows · macOS · iOS8.8 Visit Specs
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c.Email Free plan Browser extension8.7 Visit Specs - 04 gpg4o
gpg4o suits Outlook users who need OpenPGP encryption, signing, and key management for confidential email.
From €99.95/mo Free plan Windows8.7 Visit Specs - 05
DataMotion Secure Email Exchange The service is aimed at healthcare, financial services, and government organizations with complex enterprise workflows.
Free trial Web · iOS · Android · API8.6 Visit Specs - 06
Mailvelope Mailvelope suits people who want PGP encryption for email through supported webmail services.
From €3/mo Free trial Web · Browser extension8.6 Visit Specs - 07 Send It Secure From $15/mo Free plan Web · Windows · iOS · API8.6 Visit Specs
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FlowCrypt FlowCrypt suits individuals seeking encrypted email and organizations that need domain-wide controls.
Free plan Browser extension8.5 Visit Specs - 09
Virtru Email Encryption It suits people and teams that need protected email across the listed desktop and mobile platforms, particularly Outlook or Gmail users.
From $119/mo Free trial Web · Windows · macOS · iOS8.5 Visit Specs - 10 Encryptomatic OpenPGP
It suits Windows users who need local, end-to-end message and file encryption, especially Outlook users.
From $2.50/mo Windows8.2 Visit Specs - 11 Gpg4win Free plan Windows8.2 Visit Specs
- 12 Secure Message
It is aimed at healthcare, finance and legal teams, MSPs, internal IT teams and compliance-driven organisations that need a self-hosted mail gateway.
From $57.50/mo Free plan Web · Linux · Self-hosted8.2 Visit Specs - 13 GPG Suite Free trial macOS8.1 Visit Specs
- 14 PDF Postman
PDF Postman suits Outlook users on Windows who need to send encrypted email messages or attachments as PDFs.
From $79.99/mo Free trial Windows8.1 Visit Specs - 15 Virtru Data Security Platform
Virtru suits organizations protecting shared data across email, files, applications, and partner environments.
From $119/mo Web · Windows · macOS · Linux8.1 Visit Specs - 16 Cisco Catalyst Center Web · Windows · macOS · Linux7.9 Visit Specs
- 17 Microsoft Exchange Online From $0.33/mo Web · Windows · macOS · iOS7.9 Visit Specs
- 18 Mimecast Secure Messaging
It suits organizations that need to share sensitive information with colleagues and partners by email.
Web · Windows · macOS · iOS7.7 Visit Specs - 19 Symantec PGP Gateway Email Encryption Web · Windows · Linux · Self-hosted7.7 Visit Specs
- 20 Sophos Secure Message
Sophos Email suits organizations seeking email threat defense, data loss prevention, encryption, and user-awareness features.
Free trial Web7.5 Visit Specs - 21 OpenText Core Email Encryption Web7.4 Visit Specs
- 22 Proofpoint Email DLP and Encryption
It suits organizations seeking to protect sensitive communications with external partners and internal recipients.
Web · Windows · iOS · Android7.4 Visit Specs - 23 Cryptshare.express From €0.42/mo Web7.3 Visit Specs
- 24 Trustifi Outbound Shield
Outbound Shield is presented for small and mid-size businesses, managed service providers, and regulated organizations such as legal, healthcare, and financial firms.
Web · Windows · macOS · API7.3 Visit Specs - 25 OpenText Core Email Message Privacy
It suits managed service providers and organizations protecting sensitive email and files for small and medium-sized businesses.
Web7.2 Visit Specs - 26
KnowBe4 From $2.40/mo Web6.8 Visit Specs - 27 Paubox Email Encryption
It suits healthcare-oriented teams sending email through web, Outlook, or Gmail and requiring password-based recipient verification.
From $29/mo Web6.8 Visit Specs - 28
RMail It suits individuals and organizations sending email with recipient verification, expiry, and attachment controls.
Web · Windows · macOS6.6 Visit Specs - 29 Cisco Meraki Dashboard Web5.9 Visit Specs
- 30 Webroot Security Awareness Training Web5.3 Visit Specs
Choosing instead of Lockbin
Readers may switch when they need encryption inside an existing mailbox, Outlook integration, mobile applications, or a different delivery method. Lockbin has no Outlook or Gmail integration, and its attachment and user limits vary by plan. Compare whether recipients authenticate by password or identity, whether messages arrive through links, portals, or attachments, which platforms are supported, and what administration controls each service provides. Also consider expiry behavior, trial or free access, and the recurring or request-based price.