Terms of service

Who this is between

SignSealer is operated by Mashdun LLC ("we", "us"). This agreement is between us and the business or person who opens an account ("you"). Accepting these terms — by signing them during onboarding, or by using the service — makes them the agreement between us.

Someone who signs a document you sent is not a party to this agreement. Their relationship is with you; ours is with you too.

Your account

You are responsible for what happens under your account, including what the people you invite do with it. Keep your credentials to yourself, and tell us at security@signsealer.com if you think they have got out — an API key can send documents in your name, and the sooner we can revoke one the less it can do.

You must be old enough to enter a contract where you live, and you must not be barred from using US software by sanctions or export law.

Consent is yours to obtain

This is the clause most likely to matter to you, so it is not in the small print.

When you send a document by email or text through SignSealer, you are the sender. You are the one who needs a lawful basis for contacting that person, and in the United States that means the TCPA for text messages and CAN-SPAM for email. We send transactional messages about documents you asked us to send; that is all we will carry, and the text messages page sets out exactly what goes out and what STOP does.

You agree that you have the consent you need for every recipient you give us, that you will not use SignSealer to send marketing, and that you will honour an opt-out. We honour STOP for you automatically and we will not send to a suppressed address, even if you ask us to.

Every text we carry for you comes from our toll-free number, names your business and SignSealer, and tells the recipient how to stop. Recipients can reply STOP to stop and HELP for help; message frequency varies with how many documents they are sent, and message and data rates may apply. Mobile carriers are not liable for delayed or undelivered messages. We will not share or sell your mobile information with third parties for promotional or marketing purposes. A recipient's number and consent are never shared with third parties or affiliates for marketing, and are never sold.

If a carrier or a regulator comes to us about messages sent from your account, we will tell you, and we may stop sending for you while it is sorted out.

What you may not send

Not through us:

• Anything unlawful where it is sent or where it is received.
• Documents designed to deceive the person signing about what they are signing.
• Content you do not have the right to distribute.
• Malware, or anything intended to break the service or reach another customer's data.
• Card numbers, or health records you are handling under a business associate agreement we have not signed with you.

We do not read your documents to check. This clause exists so that when we do find out, there is something to point at.

Your documents and your data

You own what you put in. For everything a signer gives us — their name, their address or number, the record of what they saw and when — you are the controller and we are your processor: we handle it on your instructions and for no purpose of our own. We do not sell it, and we do not train models on it.

We keep it while your account is open and, where a signature has been made, we keep the record of that signature afterwards. That is explained under Stopping below and in the privacy policy.

We use a small number of other companies to run the service — the database and the email and text carriers. Each one, and what it is handed, is listed in our subprocessor list. We will keep that list current, and a new one takes on the same obligations we have to you.

What we do, and what we do not promise

We will run the service with reasonable care, keep it secure as described in our evidence and security material, and tell you about a breach that affects you without waiting to be asked.

We do not promise it will never be down. There is no uptime commitment, on Free or on the membership. If we ever offer one it will be a separate written commitment with a number in it, not an implication of this sentence.

We are working towards an independent SOC 2 examination and are implementing controls aligned with the Trust Services Criteria. We have not completed one, and we will not say otherwise until we have.

We may change how the service works. If a change removes something you are relying on, we will tell you at least 30 days beforehand at the address on your account.

Money

The pricing page is part of this agreement. The billable unit is a completed agreement — one, however many people signed it. We do not bill for drafts, documents nobody signed, voids, expiries, reminders or reading your own records.

• Prepaid credit. You buy credit in advance. The membership fee, each completed agreement after the month's free ones, and the extras — texts, passcodes, ID Evidence, AI drafting, white label — are drawn from it as they happen, at the rates on the pricing page, and each draw is listed on your billing page. Free draws nothing.
• Automatic reload is on unless you turn it off. When your balance falls below the line shown on your billing page, we charge the card you last bought credit with for the amount shown there. If the card is declined we turn reload off and tell you.
• When credit runs out, a signing already under way still completes, and a signing at a counter tablet is recorded and settled from your next credit. New sends and texts wait until credit is added. A membership renewal your balance cannot cover ends the membership, and the account carries on as Free.
• Credit does not expire while your account is open. It is not a deposit, earns no interest and cannot be transferred. If you close your account, we refund the credit you bought and did not use, on request, to the card it was bought with. Credit we gave you rather than sold you is not refunded.
• Taxes are yours, where any apply, unless we are obliged to collect them.
• If a payment fails we will tell you. We will not lock you out of records you have already made.
• Price changes take effect at your next renewal, and we will tell you at least 30 days beforehand.
• Stopping the membership ends it when the month already drawn ends. We do not refund part of a month's fee, and we draw nothing for a month after you have stopped.

Stopping

You can close your account at any time. We can end this agreement with 30 days' notice, or immediately if you are using SignSealer for something in the list above or have not paid.

Whatever the reason, two things hold:

• You can export first. Your documents, your certificates and your audit trail, in a form you can read without us.
• A certificate stays checkable. Anyone you gave a verification code to can still check it at signsealer.com/verify after your account is gone. That is the point of the product: a record that only works while you keep paying is not evidence, it is a subscription.

Warranties

Beyond what is written here, the service is provided as it is. We do not warrant that it will meet a particular need of yours, that it will be uninterrupted, or that a document you send through it will achieve a particular legal effect. We are not a law firm and nothing here is legal advice. Where the law of your state gives you a warranty that cannot be excluded, this paragraph does not try to exclude it.

Liability

Neither of us is liable to the other for indirect or consequential loss, or for lost profits. Our total liability under this agreement is limited to what you paid us in the twelve months before the claim.

That limit does not apply to our own breach of the confidentiality and data-protection obligations above, to our gross negligence or wilful misconduct, or to anything a limit is not permitted to cover.

If somebody sues over what you sent

You will cover us against a claim arising from a document you sent, from a message sent to somebody who had not consented, or from your use of SignSealer in breach of this agreement. We will tell you promptly, let you run the defence, and not settle without asking you.

Changes to these terms

This is version 2026-09-23, effective 23 September 2026.

If we change them materially we will tell you at least 30 days before they take effect, and you can leave rather than accept. Every earlier version stays available, because if you signed a version of these terms during onboarding, you are entitled to read the version you signed rather than the one we happen to be showing today.

Law and disputes

Tennessee law governs this agreement, without regard to its conflict-of-laws rules, and a dispute goes to the state or federal courts sitting in Tennessee. If you are a consumer somewhere that gives you the right to sue locally, this clause does not take it away.

Talk to us first. Most of what ends up in a complaint is something we would have fixed if we had heard about it.

The rest

This agreement, the pricing page and the privacy policy are the whole of it. If a clause turns out to be unenforceable, the rest still stands. Neither of us waives a right by not enforcing it once. You may not assign this agreement without us; we may assign it if the business is sold, and we will tell you.

Asking us something

legal@signsealer.com.