Last updated: October 22, 2026
LockDoc is a product of Kitzer, LLC, a New York limited liability company ("LockDoc"). These terms are an agreement between LockDoc and the person or firm using LockDoc ("you"). By creating an account or paying for a plan, you agree to them. If you use LockDoc for a firm, you confirm you can agree on its behalf.
LockDoc lets you send, receive and store files with end-to-end encryption, through the website, the Chrome extension for Gmail, the Outlook add-in, client upload links, and fax and physical mail. The plans are:
| Plan | Price | Includes |
|---|---|---|
| Pay Per Send | $3 per secure send | Files up to 2 GB; links available for 30 days; no monthly commitment |
| Personal | $10 a month, or $100 a year | Unlimited secure sends; files up to 10 GB; 100 GB storage; links kept for 1 year; reopen files you've sent |
| Professional | $22 a month, or $220 a year | Unlimited secure sends and file size; 200 GB storage; links kept until you delete them; client upload portal; your own fax number at cost (about $1 a month) with 100 pages a month included |
| Team | $18 per user a month, or $180 per user a year (3-user minimum) | Everything in Professional for every user; 200 GB pooled storage per user; shared client portal uploads and sent-files log; one bill |
Faxes sent from LockDoc on Pay Per Send and Personal are $1 per fax (up to 10 pages). Fax pages beyond those included are $0.10 each.
Sign in with Google or Microsoft. You also set a portal password that unlocks your encryption key. LockDoc never has it and cannot recover it. If you lose it, files protected by your old key may not be reopenable. You are responsible for keeping your sign-in and portal password safe and for activity on your account.
You keep all rights to your files. You give LockDoc only the permission needed to store, transmit and deliver them as you direct. You are responsible for having the right to send what you upload and for complying with the laws that apply to your own work, including your professional duties to your clients.
Do not use LockDoc to break the law, send malware, or attack or overload the service or other people's accounts. LockDoc may suspend access that puts the service or others at risk.
Plans are billed through Stripe, monthly or yearly, and renew automatically for the same period until you cancel. For yearly plans, LockDoc emails you a reminder before each renewal. You can cancel anytime from your account, and your plan stays active until the end of the period you've paid for. Payments are non-refundable, including for partial periods, except for billing errors, sends or faxes that fail (which are refunded automatically), or where the law requires a refund. Pay Per Send charges are made at the time of sending. LockDoc may change prices with notice by email; a new price applies from your next renewal after the notice.
This section is LockDoc's contract with every customer for protecting the files and personal information you or your clients upload to or send through LockDoc ("your information"). It is written to meet the written-contract requirement that many state data protection laws place on service providers.
a. LockDoc cannot read your files. Every file is encrypted on the sender's own device before it is uploaded, so LockDoc only ever receives and stores encrypted data. The key that decrypts your files is itself locked with your passphrase, and your passphrase never leaves your device and is never sent to LockDoc. LockDoc, its staff and its vendors therefore have no way to open your files, even if they wanted to or were asked to.
b. Other safeguards. LockDoc also maintains administrative, technical and physical safeguards for your information, including encryption of all connections, encrypted backups, access to LockDoc's systems limited to what is needed to run the service, activity logging, and keeping systems and software up to date. LockDoc reviews these practices regularly against the SOC 2 Trust Services Criteria.
c. Use. LockDoc uses your information only to provide the service to you. LockDoc does not sell it or use it for advertising.
d. Vendors. LockDoc uses only vendors that commit, in their agreements with LockDoc, to protecting the information they handle. They are listed in the Privacy Policy. None of them can open your encrypted files (fax and physical mail work differently, see section 8).
e. Security incidents. If LockDoc becomes aware of unauthorized access to or acquisition of your information, it will notify you within 72 hours, with what happened, what information was involved and what LockDoc is doing about it.
f. Return and deletion. You can download or delete your files at any time. When your account ends, LockDoc deletes your files as described in the Privacy Policy. Encrypted database backups, which hold only details such as file names and email addresses, expire within 30 days.
g. Discontinuing the service. If LockDoc ever shuts down, you will get at least 90 days' notice by email, with time to download your files.
Faxes and physical mail cannot be end-to-end encrypted: the fax network or the mail printer has to read the document in order to send it. LockDoc tells you before you send. Section 7 applies to LockDoc's own handling; fax and mail partners handle documents as needed to deliver them, as described in the Privacy Policy.
LockDoc aims to keep the service available but does not promise uninterrupted service. LockDoc keeps encrypted backups of account details, not of files; files you delete cannot be recovered. Keep your own copies of anything you cannot afford to lose.
The service is provided "as is." To the extent the law allows, LockDoc is not liable for indirect or consequential losses, and LockDoc's total liability to you for any claim is limited to the amount you paid LockDoc in the 12 months before the claim. This does not limit liability that the law does not allow to be limited.
You can stop using LockDoc and delete your account at any time. LockDoc may end your access if you seriously or repeatedly break these terms, for example illegal use, sending malware, attacking the service, or not paying. Except for illegal use, LockDoc will give you notice and time to download your files. Sections that by nature should continue (for example 4, 7f and 10) continue after the agreement ends.
LockDoc may update these terms. Material changes will be emailed to account owners before they apply, and the date above will change. Continuing to use LockDoc after the date means you accept the update.
These terms are governed by New York law. This does not take away any rights the law of your own state gives you that cannot be waived. Questions: [email protected].