Mimecast vs PreVeil Comparison: Reviews, Features, Pricing & Alternatives in 2026

Detailed side-by-side comparison to help you choose the right solution for your team

Updated Apr 2026 8 min read

Mimecast

0.0 (0 reviews)

Mimecast provides an advanced cloud-based security platform designed to protect your organization from email-borne threats, data loss, and downtime while ensuring continuous communication and simplified compliance management.

Starting at --
Free Trial 30 days
VS

PreVeil

0.0 (0 reviews)

PreVeil provides end-to-end encrypted email and file sharing to help you protect sensitive data and meet CMMC and ITAR compliance requirements without changing your existing workflows.

Starting at Free
Free Trial NO FREE TRIAL

Quick Comparison

Feature Mimecast PreVeil
Website mimecast.com preveil.com
Pricing Model Custom Freemium
Starting Price Custom Pricing Free
FREE Trial ✓ 30 days free trial ✘ No free trial
Free Plan ✘ No free plan ✓ Has free plan
Product Demo ✓ Request demo here ✓ Request demo here
Deployment saas mobile cloud mobile desktop
Integrations Microsoft 365 Google Workspace Salesforce Splunk ServiceNow Okta CrowdStrike Palo Alto Networks Rapid7 Microsoft Sentinel Outlook Gmail Windows File Explorer macOS Finder iOS Android
Target Users mid-market enterprise small-business mid-market enterprise
Target Industries defense healthcare legal
Customer Count 0 0
Founded Year 2003 2015
Headquarters London, UK Boston, USA

Overview

M

Mimecast

Mimecast is a comprehensive email security and management platform that protects your business from sophisticated cyberattacks. You can defend your inbox against phishing, ransomware, and impersonation attempts using its AI-powered threat intelligence. Beyond just blocking threats, the platform ensures your email remains functional even during server outages, allowing you to maintain business continuity without interruption.

You can also use the platform to automate data retention and compliance. It provides a centralized cloud archive where you can securely store, search, and retrieve historical communications for legal or regulatory needs. Whether you are a mid-sized company or a global enterprise, the software integrates with your existing Microsoft 365 or Google Workspace environment to create a more resilient digital workplace.

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PreVeil

PreVeil offers a simple way to add top-tier security to the tools you already use every day. By integrating directly with Outlook, Gmail, and Windows File Explorer, it adds a layer of end-to-end encryption that ensures only intended recipients can access your data. You don't have to worry about server breaches because your information stays encrypted from the moment it leaves your device until it reaches its destination.

You can easily manage compliance for regulations like CMMC, ITAR, and HIPAA using their specialized Drive and Email modules. It is designed specifically for defense contractors and regulated industries who need high-level security without the complexity of traditional encrypted systems. You can get started quickly with their free version for individuals or scale up to enterprise-grade management for your entire organization.

Overview

M

Mimecast Features

  • Email Security Cloud Gateway Block malicious attachments and URLs before they reach your network using deep content inspection and real-time threat intelligence.
  • Internal Email Protect Detect and remediate threats originating from within your organization to stop the lateral spread of malware or phishing.
  • Mailbox Continuity Keep your employees sending and receiving emails during a primary mail server outage with an automated failover system.
  • Cloud Archive Store all your business communications in a secure, encrypted repository that allows you to perform lightning-fast searches for e-discovery.
  • Awareness Training Reduce human error by launching engaging security videos and phishing simulations to educate your staff on modern cyber risks.
  • DMARC Analyzer Protect your brand reputation by preventing unauthorized parties from sending fraudulent emails using your company's domain name.
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PreVeil Features

  • End-to-End Encryption. Protect your emails and files with encryption that ensures only you and your recipients can ever read the content.
  • CMMC Compliance. Meet Department of Defense cybersecurity requirements quickly with pre-configured settings designed for CMMC and NIST 800-171 standards.
  • Outlook & Gmail Integration. Send secure messages directly from your existing inbox using a simple encrypted toggle—no new accounts required.
  • Secure File Sharing. Store and share sensitive documents in encrypted folders that appear just like regular folders on your computer.
  • Zero-Trust Architecture. Eliminate the risk of password-based attacks since your identity is verified through secure cryptographic keys instead of vulnerable passwords.
  • Approval Groups. Set up a system where multiple administrators must approve access to sensitive data to prevent unauthorized internal leaks.

Pricing Comparison

M

Mimecast Pricing

P

PreVeil Pricing

Individual
$0
  • End-to-end encrypted email
  • Encrypted file storage
  • Outlook and Gmail integration
  • Mobile app access
  • 2GB of secure storage

Pros & Cons

M

Mimecast

Pros

  • Highly effective at blocking sophisticated phishing and impersonation attacks
  • Seamless integration with Microsoft 365 and Google Workspace environments
  • Reliable email continuity ensures zero downtime during server maintenance
  • Powerful search capabilities within the cloud archiving feature
  • Granular policy controls allow for highly customized security rules

Cons

  • Initial configuration and setup can be complex for beginners
  • The administrative interface has a steep learning curve
  • Pricing is generally higher than basic built-in security tools
A

PreVeil

Pros

  • Integrates directly into existing Outlook and Gmail workflows
  • Simplifies the complex process of CMMC compliance
  • No passwords required for user authentication
  • Fast setup compared to traditional encrypted servers

Cons

  • Recipients must also have PreVeil to view messages
  • Mobile app interface can feel slightly restricted
  • Limited formatting options in the secure email composer
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