# Beyond Encryption Mailock for M365 Beyond Encryption Mailock for M365 is an Email Encryption product by Beyond Encryption. It runs in the cloud. Pricing is commercial (contact sales). AES-256 encrypted email add-on for M365 with auth & revocation. Checked October 2026. ## What is Beyond Encryption Mailock for M365? Mailock for Microsoft 365 is a secure email solution that integrates with Microsoft 365 to provide end-to-end encryption, recipient identity verification, and compliance controls for email communications. It is available as an Outlook add-in for desktop users and as a secure email gateway for high-volume automated delivery via Exchange Online. Encryption is applied using AES-256, securing message content throughout delivery and reply. Recipient authentication is enforced before access is granted, using challenge methods such as SMS, Q&A, or Unipass ID. CRM integration can be used to apply customer-specific authentication checks to reduce the risk of misdelivery. Key compliance capabilities include full message revocation — allowing senders to withdraw access to a sent message at any time, even after it has been opened. This goes beyond Microsoft's native email recall functionality. Message tracking features provide timestamped audit trails covering opens, replies, and downloads, along with read notifications and engagement analytics. Recipients can respond securely via browser or the Outlook add-in without needing to create an account. Encryption can be initiated manually via the Outlook add-in, or applied automatically through policy-based rules or keyword triggers. A separate Automated tier supports large-scale secure communications delivery. Tags: Encryption, Microsoft 365, Outlook, Microsoft ## Where it fits in your security program (NIST CSF 2.0) - [Protect](https://cybersectools.com/guides/building-protect-program-small-team): helps you prevent attacks and keep data safe. ## Quick facts - Category: [Email & Messaging Security](https://cybersectools.com/categories/email-security) · [Email Encryption](https://cybersectools.com/categories/email-encryption) - Vendor: [Beyond Encryption](https://cybersectools.com/companies/beyond-encryption) - Deployment: Cloud - Company size fit: SMB, Mid-Market, Enterprise - Pricing model: Commercial (contact sales) - Features: 10 listed - Integrations: 5 listed - Website: mailock.com The full feature and integration lists are on the page for signed-in visitors. ## Where it ranks No shortlist covers this product's category yet. The closest is [Best Email Security Solutions for Business](https://cybersectools.com/shortlists/best-email-security-platforms). ## Beyond Encryption Mailock for M365 FAQ ### What is Beyond Encryption Mailock for M365? Beyond Encryption Mailock for M365 is a product by Beyond Encryption in the Email Encryption category. It covers Encryption, Microsoft 365 and Outlook. ### What is the pricing for Beyond Encryption Mailock for M365? Beyond Encryption Mailock for M365 is a commercial product. For pricing, visit https://www.mailock.com/integrations/m365 or contact Beyond Encryption. ### What are alternatives to Beyond Encryption Mailock for M365? Alternatives to Beyond Encryption Mailock for M365 listed on CybersecTools: 1. [Z1 SecureMail Gateway](https://cybersectools.com/tools/zertificon-z1-solutions) - Enterprise email encryption gateway supporting S/MIME, OpenPGP, and digital signing. (Commercial) 2. [PRIM'X ZEDMAIL](https://cybersectools.com/tools/primx-zedmail) - Transparent email and attachment encryption for corporate messaging via Outlook (Commercial) 3. [Honeycake Email](https://cybersectools.com/tools/honeycake-email) - Email client plugin that encrypts file attachments into .cake format before sending. (Commercial) 4. [Egress Protect](https://cybersectools.com/tools/egress-protect) - End-to-end email encryption with DLP and access controls for Microsoft 365 (Commercial) 5. [Intermedia Email Encryption](https://cybersectools.com/tools/intermedia-email-encryption) - Cloud-based email encryption service using PKI, S/MIME & X.509 for orgs. (Commercial) Compare all Beyond Encryption Mailock for M365 alternatives at [https://cybersectools.com/alternatives/beyond-encryption-mailock-for-m365](https://cybersectools.com/alternatives/beyond-encryption-mailock-for-m365) ### What deployment and organization size does Beyond Encryption Mailock for M365 fit? Beyond Encryption Mailock for M365 is available as cloud. It is listed for smb, mid-market and enterprise organizations. Pricing is commercial. Ask Beyond Encryption for pricing and support terms. ## Compare Beyond Encryption Mailock for M365 with similar solutions - [Beyond Encryption Mailock for M365 vs Z1 SecureMail Gateway](https://cybersectools.com/compare/beyond-encryption-mailock-for-m365-vs-zertificon-z1-solutions) - [Beyond Encryption Mailock for M365 vs PRIM'X ZEDMAIL](https://cybersectools.com/compare/beyond-encryption-mailock-for-m365-vs-primx-zedmail) - [Beyond Encryption Mailock for M365 vs Honeycake Email](https://cybersectools.com/compare/beyond-encryption-mailock-for-m365-vs-honeycake-email) All alternatives to Beyond Encryption Mailock for M365: [/alternatives/beyond-encryption-mailock-for-m365](https://cybersectools.com/alternatives/beyond-encryption-mailock-for-m365) --- Source: https://cybersectools.com/tools/beyond-encryption-mailock-for-m365 For AI agents: every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md, and any compare page has a Markdown copy too (add .md to its URL). More on Beyond Encryption Mailock for M365 and Beyond Encryption: funding, momentum, hiring and news, plus the full product and company record, are available through the Mandos MCP Server (paid plans), which connects to AI assistants: https://mandos.io/mcp?utm_source=cybersectools.com&utm_medium=product-md