Simple & secure file sharing through email and a client portal

Send encrypted files right from Gmail or Outlook, and let clients upload documents securely — no account needed on their end.
Secure file sharing illustration

Send files via email

As easy as sending a regular attachment. Use LockDoc right within Outlook and Gmail.

How it works

LockDoc workflow
1. Upload
Click to select files
2. Encrypt
Automatic encryption
3. Choose Method
Magic Link or manual
4. Send
Link auto-inserted

Pricing

Sending occasionally? Choose Pay Per Send billing and only pay when you send. Monthly plans are available when you want included storage and client upload features.
Pay Per Send
Pay as you go, priced per send
$3 /secure send
  • End-to-end encryption
  • Chrome Extension & Outlook Add-in
  • Up to 2 GB per file
  • Links available for 30 days
  • No monthly commitment
  • Pay per use
  • Fax from LockDoc: $1 per fax (up to 10 pages)
Personal
Best for individual regular use
$10/mo
  • End-to-end encryption
  • Chrome Extension & Outlook Add-in
  • Unlimited secure sends
  • Up to 10 GB per file
  • 100GB storage
  • Links kept for 1 year
  • Reopen files you've sent
  • Fax from LockDoc: $1 per fax (up to 10 pages)
Team
For firms that share client files
$18 /user/mo 3-user minimum
  • Everything in Professional, for every user
  • Shared client portal uploads
  • Shared sent-files log
  • Reopen files you've sent
  • 200GB pooled storage per user
  • One bill for the whole team
  • Team fax numbers at cost (about $1/mo each), 100 pages/mo per number
Professional
Best for heavy senders and client uploads
$22/mo
  • End-to-end encryption
  • Chrome Extension & Outlook Add-in
  • Unlimited secure sends
  • Unlimited file size
  • 200GB storage
  • Links kept indefinitely
  • Reopen files you've sent
  • Client upload portal
  • Your own fax number at cost (about $1/mo), 100 pages/mo included

Choose Pay Per Send for pay-as-you-go secure emails, or select a monthly plan for included storage.

Fax pages beyond the 100 included per number are $0.10 each. Fax numbers are billed at our carrier's cost. An encrypted-link fax counts as one page.

See it in action

LockDoc in Outlook

Works in Outlook

LockDoc in Gmail

Works in Gmail

Fax, the secure way

Some people still need a fax. LockDoc gives you two ways to send one from your dashboard, plus your own fax number.

Most secure: send an encrypted link by fax. Your document is encrypted in your browser, exactly like a LockDoc secure email. The fax machine receives a single cover page with a QR code and a short link. The recipient scans it, types the passcode you give them by phone or text, and downloads the document. The document itself never crosses the phone network.

Standard fax (the actual pages). When the recipient needs paper pages, send a normal fax. Your PDF is encrypted on its way to our fax carrier and delivered over the phone network like any fax. LockDoc never keeps a readable copy.

Receive faxes into your encrypted inbox. Faxes sent to your LockDoc number land in your encrypted inbox, next to your client-portal uploads. We email you when one arrives (never the fax itself).

Client upload portal

Receive files from clients without them needing an account. Clients upload through your portal as easily as attaching a file to an email. Files are encrypted automatically, and you're notified by email when new files arrive.

Use cases

📊 Accounting & Tax Preparation

Client portal for secure tax document uploads. Send financial reports via encrypted email attachments.

⚖️ Legal & Law Firms

Secure portal for client case file uploads. Send privileged documents via encrypted email attachments.

🏦 Financial Services & Banking

Client portal for secure financial document uploads. Protect outgoing client data with encrypted email attachments.

🏥 Healthcare & Medical

HIPAA-compliant portal for patient record uploads. Share medical records securely via encrypted email attachments.

🏠 Real Estate

Secure portal for client document uploads. Send property details via encrypted email attachments.

🛡️ Insurance

Secure portal for policyholder document uploads. Send policy documents via encrypted email attachments.

Negotiating a contract before you send it? Redline and e-sign it on DocStrike →