Comparison

DeadVault vs Mimecast

Mimecast secures your email. DeadVault replaces the need to email sensitive files at all. They're different tools solving different problems.

Choose Mimecast if…

  • ✓You need enterprise email security (anti-phishing, anti-malware)
  • ✓Email continuity and archiving are compliance requirements
  • ✓You have IT staff to manage deployment and policy configuration
  • ✓You want one platform governing your entire email infrastructure

Choose DeadVault if…

  • ✓You need a standalone tool for secure file exchange with clients
  • ✓Files should self-destruct after the deadline with cryptographic erasure
  • ✓You want clients to upload and download without creating accounts
  • ✓You need payment gates, PIN protection, and per-file audit trails

Feature comparison

FeatureMimecastDeadVault
Primary purposeEmail security platformSecure file delivery
Standalone file transfer✕✓
Encryption standardTLS + AES-256AES-256-GCM
Per-file encryption keys✕✓
Cryptographic erasure✕✓
Automatic file destruction✕Custom deadline
Payment gates✕✓
PIN-protected access✕✓
Audit trailEmail-levelPer-file + per-access
Client portal✕Branded
Bidirectional file exchange✕✓
Email threat protection✓✕
Email archiving✓✕
No account needed for recipients✕✓
Starting priceContact sales$19/mo

Key differences

These aren't competing products. Here's why the distinction matters.

Different categories entirely

Mimecast is email security infrastructure: spam filtering, phishing protection, malware scanning, email continuity, and archiving. DeadVault is a standalone secure file delivery tool. Mimecast secures the email channel. DeadVault replaces the need to use email for sensitive files in the first place.

Enterprise deployment vs. instant setup

Mimecast requires IT involvement to deploy: MX record changes, directory sync, policy configuration, and typically a multi-week rollout. DeadVault is a SaaS tool you sign up for and start using in under two minutes. No IT department required, no infrastructure changes.

Mimecast attaches to email: DeadVault replaces it

Mimecast Secure Messaging encrypts email attachments, but the workflow is still email. The file goes through mail servers, sits in inboxes, and lives wherever the recipient's email is stored. DeadVault removes the file from email entirely, a secure link leads to an encrypted portal where the file self-destructs on schedule.

No file lifecycle management in Mimecast

Mimecast doesn't give you per-file deadlines, cryptographic erasure, or destruction proof. Email archiving means files persist indefinitely by design. DeadVault's entire model is the opposite: files exist only as long as they need to, then keys are destroyed and the data becomes unrecoverable.

Where Mimecast is the right choice

If email security infrastructure is what you need, Mimecast is a strong platform.

✓Comprehensive email security: phishing, spam, malware, and impersonation protection
✓Email continuity keeps your inbox working during outages
✓Email archiving and compliance for regulated industries
✓Large file send capability built into the email workflow
✓Deep integration with Microsoft 365 and Google Workspace
✓Established enterprise platform with global support infrastructure

Common questions

Not really. They solve different problems. Mimecast secures your email infrastructure: protecting against phishing, malware, and email-borne threats. DeadVault replaces the practice of emailing sensitive files by providing encrypted, self-destructing delivery links. Many firms could benefit from both: Mimecast for email security, DeadVault for secure file handoffs with clients.
Mimecast Secure Messaging encrypts email attachments and large files sent via email. It's a good improvement over unencrypted email. But the file still travels through the email pipeline, lives in the recipient's inbox, and doesn't self-destruct. There's no per-file encryption key, no cryptographic erasure, no payment gate, and no branded client portal. If you just need to encrypt the occasional attachment, Mimecast handles it. If secure file delivery is a core part of your client workflow, DeadVault is purpose-built for it.
Possibly. Mimecast protects your email. DeadVault protects your file handoffs. If you're currently emailing tax returns, legal documents, or financial statements as attachments, even encrypted ones. Those files persist in inboxes, archives, and backups indefinitely. DeadVault gives you ephemeral delivery with cryptographic erasure, audit trails, and client-facing portals. They're complementary tools.
For a 5-person CPA firm or solo attorney, Mimecast's enterprise email security suite is likely more infrastructure than you need, and the pricing reflects that. If your primary concern is securely exchanging files with clients (not defending against advanced email threats), DeadVault solves that specific problem at $19/month without any IT deployment.
Mimecast doesn't publish pricing. You'll need to contact their sales team for a quote, and pricing is typically per-user, per-year with annual contracts. Industry estimates put it in the $3-6 per user per month range depending on the plan, but it's enterprise software with enterprise sales cycles. DeadVault is $19/month flat, no sales call required.

Secure file delivery without the email baggage

Stop attaching sensitive files to emails. Give clients a secure, branded portal that self-destructs on schedule.

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