LockDoc

Send attachments securely without leaving Outlook. Your files are end-to-end encrypted - only your recipient can access them, not even us. The first 3 secure links are free! Sign up for pay-per-use or subscription plans.

How it works:

• 📎 Click the LockDoc add-in icon and select your files
• 🔒 Files are encrypted in your browser before upload - zero-knowledge security
• 🔐 Choose how to share the passphrase:

  • AutoLink (Recommended): Passphrase automatically embedded in the secure link for easy sharing. The passphrase never touches our servers - only you and your recipient have access
  • Copy Passphrase: Copy and share the passphrase separately (via SMS, phone, etc.) for maximum security

• 🔗 A secure link is inserted into your email body

Secure file sharing in just a few clicks. With end-to-end encryption and passphrases that never reach our servers, your files stay private.

Technical details: https://lockdoc.co/how-it-works

Key Features:

• No account required for recipients - they just need the passphrase. Files are automatically decrypted and downloaded upon access
• Send history and tracking - view all files you've sent via LockDoc in your dashboard
• Bypass Outlook file limits - no file size cap, only your plan's storage allotment

Pricing:

• Trial: First 3 secure links free
• Pay Per Use: $3 per secure link + $0.50 per GB. No storage limit. Perfect for occasional encrypted file sharing
• Basic: $9/month with 2GB storage
• Business: $18/month with 30GB storage and client upload portal access
• Business Premium: $42/month with 100GB storage and client upload portal access