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About Mailock
What is Mailock?
Mailock is a secure email platform that lets you send sensitive information by email with end-to-end encryption (AES-256) and flexible recipient identity checks. It ensures that only the intended recipient can read your messages, even if the email is intercepted or misaddressed.
What problem does it solve?
Standard email is not secure—it travels through multiple servers and can be intercepted or sent to the wrong person. Mailock reduces the risk of data breaches by encrypting messages and attachments, recording proof of receipt, and allowing you to revoke access if needed. It helps organizations meet regulatory requirements like ICO and FCA guidelines.
Who is it for?
Mailock is ideal for professionals and teams who regularly exchange confidential data—such as financial advisors, legal firms, healthcare providers, and HR departments. It’s also suitable for high-volume senders like insurance companies or utilities that need to send statements securely. It is not for individuals or businesses that only communicate via non-email channels.
Real use cases
- Sending contracts, financial statements, or legal documents to clients.
- Sharing sensitive HR data like payslips or performance reviews.
- Complying with data protection regulations when emailing personal information.
- Reducing reliance on postal mail for confidential correspondence.
Key features
- Encryption — Protect email messages and attachments with AES-256 encryption.
- Recipient challenges — Verify identities with Q&A or SMS codes before message access.
- Message Tracker — Record when secure emails are delivered and opened for compliance.
- Message revoke — Retract access to sent messages if you made a mistake.
- Custom branding — Tailor the recipient experience with your logo and colors (Pro and above).
- Policy-based encryption — Automatic keyword and rule-based security for high-volume senders (Enterprise).
SaaSpartout Score
6.8
/10
Editorial score from our review methodology — not user ratings.
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Mailock Pricing
Mailock pricing: from £9.30/user/mo.
For comparison: the median starting price in Cybersecurity is $8.25/month, measured across 115 tools we track. See the full SaaS Pricing Index →
Free
£0 — up to 5 sends per month, includes email encryption and Q&A challenges. Use on web or with Outlook.
Pro
£9.30 per user/month (billed annually) — unlimited sends, everything in Free, plus SMS challenges, custom branding, enhanced alerts, enhanced tracking, and message revoke. Free 14-day trial available.
Enterprise
£299+ per company/month — everything in Pro, plus policy-based encryption, automated delivery for high volumes, API control & monitoring, enterprise support, and flexible deployment options (cloud/on-prem). Book a demo for pricing.
All prices exclude VAT. Free plan available, and Pro offers a 14-day free trial.
Frequently asked questions
How much does Mailock cost?
Mailock has a free plan (up to 5 sends/month), Pro at £9.30 per user/month, and Enterprise starting at £299+ per company/month. Prices exclude VAT.
Is there a free trial for Mailock?
Yes, Pro plan includes a 14-day free trial. You can also use the free plan indefinitely with limited sends.
Who is Mailock best for?
Mailock is best for professionals and teams that need to send sensitive information by email securely, such as financial services, legal, HR, and healthcare. It's also suitable for high-volume senders with Enterprise plan.
How does Mailock work?
Mailock encrypts your email and attachments with AES-256 and uses recipient verification methods (like Q&A or SMS codes) to control access. It tracks delivery and opening, and lets you revoke access if needed.
What are alternatives to Mailock?
Alternatives include other secure email gateways like Zivver, Egress, and Proofpoint Email Encryption. But Mailock stands out for its ease of use and recipient-first design.
What is a key limitation of Mailock?
The Pro plan has a fair usage limit of 100 sent messages per user per month under the fair usage terms. For unlimited high-volume sending, you need the Enterprise plan.
