What it does
Mailock protects email and attachments with configurable recipient authentication. It documents message tracking, revocation, Outlook integration and free, professional and enterprise plans.
Mailock lets a sender choose how the recipient verifies access: an email code, SMS code or security question. Its message tracker records delivery/opening events, and the sender can revoke later access.
The free plan serves limited sending, while professional and enterprise offers support larger workloads and centrally managed delivery. Decide whether the workflow needs individual message control or a gateway policy. Verification and tracking create useful access records, but do not prevent an authenticated recipient from disclosing what they read.
Strengths
- Recipient authentication methods can be selected.
- Tracking and access-revocation features are documented.
- A free light-use plan is available.
Watch out for
- The free plan has a limited number of sends.
Best for
- Professionals who need recipient checks before releasing sensitive mail
Sources
- Mailock Secure Email | Send Sensitive Data Safely (Oct 26, 2026)