Lockbin

Overview

Lockbin is a browser-based service for sending private messages and files, aimed at organizations that handle sensitive information, including medical practices, finance teams and government agencies. It is a focused choice when a team needs controlled recipient access and message cleanup without installing software; the free plan’s single-user and attachment caps make it less suited to broader use.

Messages use TLS in transit and FIPS 140-2 verified AES-256 encryption at rest. Lockbin says the sender and recipient hold the decryption keys, which are not stored on its servers in plaintext. The company says data is stored in the United States in a redundant cloud facility with physical security and access controls.

Key features

Recipient access: Recipients can open messages through a unique URL and password; passwordless secure links are also available for known recipients. The password option adds a gate before access, while the passwordless route reduces friction for recognized recipients.

Expiry and cleanup: Uncollected messages are destroyed after six months. Read files not marked for deletion are removed within 24 hours, a useful retention boundary for sensitive exchanges.

File delivery: Premium users can create a hosted file-drop link or embed a secure form so people can send files without an account or password. That suits incoming files, although its upload ceilings vary by plan.

Browser workflow: Lockbin runs in Chrome, Firefox, Safari or Edge, with no download or installation. It works alongside Google Workspace and Microsoft 365 without a plugin or extension, but it does not provide direct Gmail or Outlook integration.

Compliance and support: Premium and Enterprise customers can request a signed BAA, and Lockbin commits to breach notification within 60 days. Current users can email support for assistance; professional-tier users can also reach support by phone through their account.

Pricing

Lockbin is freemium, with a free plan and paid plans billed monthly. The site also advertises 10 free messages with no credit card required; the plan’s stated user and attachment limits still matter if that offer is not enough for ongoing use.

PlanPriceWhat it includesBest fitFreefreeOne user, 25 MB attachments and six months of inbox storage.A single person trying occasional secure exchanges, provided the small attachment limit is sufficient.Premium$10 a monthOne user, up to 20 attachments per message, uploads up to 100MB, no preset storage limits and a BAA by request.An individual professional who needs larger uploads, more storage flexibility or a BAA.Multi-User Enterprise$10 a monthUnlimited users, shared address book, admin compliance copies, bulk user import and uploads up to 1GB.Organizations needing centralized administration and larger uploads. The stated monthly price matches Premium despite the additional team features.The free plan gives up the higher upload ceilings, team administration and BAA-by-request terms of the paid plans. Premium remains limited to one user, so it is not the upgrade for a team; Enterprise adds unlimited users and administrative functions. The plans are billed monthly, and the free offer requires no card.

Platforms

Lockbin is available on the web and supports Linux, macOS and Windows through common browsers. Its no-install browser access is useful for mixed-device teams and recipients who should not need a dedicated app.

Who it's for

Medical, dental, CPA, finance and government organizations handling sensitive information are the clearest fit. A solo practitioner can use Free for small files or Premium for larger uploads and a requested BAA; teams that need shared contacts, compliance copies or bulk user import should consider Enterprise. Lockbin is a weaker fit for teams that require direct Gmail or Outlook integration, or for frequent large-file delivery on the free tier.

Pros and cons

Pros

Controlled access and retention: Password-protected URLs, optional passwordless links for known recipients, six-month destruction of uncollected messages and 24-hour removal of read files give senders clear access and cleanup mechanisms.

Useful team controls: Enterprise includes unlimited users, compliance copies, bulk import and a shared address book, while uploads can reach 1GB.

Browser-first delivery: Recipients can use common browsers without installing software, and file-drop links or forms can accept files without an account or password.

Cons

Direct mail integration is absent: Working alongside Google Workspace and Microsoft 365 is not the same as native Gmail or Outlook integration, which Lockbin does not offer.

Free is tightly capped: One user and 25 MB attachments constrain use to small, individual exchanges.

BAA access is conditional: A signed agreement is available by request on Premium and Enterprise, not as an unconditional feature.

Alternatives

For a broader shortlist, see Email Encryption Software and File encryption tools.

gpg4o is a Windows option with a free plan and a paid plan at €99.95 a month for OpenPGP functions and Microsoft Outlook 2016/2019/2021/365 Classic; choose it when Outlook-based OpenPGP is the priority.

DataMotion Secure Email Exchange has Android, iOS, API and web platforms, with enterprise pricing by sales contact; consider it when those platforms or an enterprise offering are more relevant.

Proofpoint Email DLP and Encryption is a paid option on Android, iOS, web and Windows; consider it if those platforms suit your deployment.

MailHippo offers a 30-day trial with 1,000 messages per month, 2GB storage, file sending up to 20 MB and a HIPAA BAA; choose it when those trial limits and terms fit better than Lockbin’s free plan.

SecureMyEmail has a free plan for one email address and runs on Windows, macOS, iOS and Android; consider it when those device platforms matter.

Mailvelope offers a browser extension and web access, with a Business plan at €3 a month for 1–49 users; consider it when an extension-based workflow and that team size fit.

Virtru Email Encryption is a paid option for web, Windows, macOS, iOS and Android, with Starter and Business plans at 119.00 USD and $219 a month respectively, each billed annually for five users; consider it when those platforms and five-user plans suit your team.

c.Email is a free browser-extension option; consider it if a free extension is the deciding factor.

Verdict

Lockbin is a sound fit for organizations that need private message and file delivery, explicit recipient access controls and automatic cleanup in a browser-based workflow. Its strongest case is the combination of encryption, retention rules and Enterprise administration; look elsewhere if direct Gmail or Outlook integration is essential, or if the free plan’s one-user, 25 MB cap is too restrictive.