Instead of Lockbin
Lockbin alternatives
Lockbin is built for sending private email messages and files, with browser access across operating systems and encryption in transit and at rest. Recipients can open a message from a unique URL with a password, or use a passwordless secure link if they are known recipients. Uncollected messages are destroyed after six months, and Premium and Enterprise plans can include a Business Associate Agreement by request. The free plan is limited to one user and 25 MB attachments; Premium starts at $10 per user per month and allows uploads up to 100 MB.
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SecureMyEmail
by SecureMyEmailFree plan AndroidiPhoneMac+2Encrypting mail in existing IMAP accounts — SecureMyEmail encrypts email without changing the user's provider or address and supports IMAP accounts, unlike Lockbin's message-and-file delivery service.
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Send It Secure
Free plan APIExtensioniPhone+2Secure messages with identity verification and Outlook integration — Send It Secure delivers messages through a portal with identity verification and Outlook integration, while Lockbin uses links and passwords and has no Outlook integration.
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Secure Message
Free plan LinuxSelf-hostedWebOrganizations managing their own inbound email gateway — Secure Message is a self-hosted inbound gateway with mail filtering and outbound rules, rather than Lockbin's web application for sending private messages and files.
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Mimecast Secure Messaging
by Mimecast Secure MessagingPaid AndroidiPhoneMac+2Organizations protecting sensitive email across devices — Mimecast Secure Messaging offers portal delivery, message expiry, Outlook integration, and admin controls; Lockbin has no Outlook integration and starts at $10 per user monthly.
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Gpg4win
Free plan Windows - 12
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Cisco Catalyst Center
Paid APILinuxMac+3 - 16
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Symantec PGP Gateway Email Encryption
Paid LinuxSelf-hostedWeb+1 - 23
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A different service may fit better if you want encryption within an existing email account, a self-hosted inbound gateway, or a particular Outlook workflow. Lockbin has no Outlook or Gmail integration, even though it works alongside Google Workspace and Microsoft 365 without an extension. Compare message delivery and recipient verification, supported devices and email systems, and whether you need a managed service or infrastructure under your control. Attachment limits, administration options, and the cost of paid plans can also shape the choice.