Electronic signature for law firms, defensible by design.
Send legal documents - engagement letters, settlements, NDAs - for signature, verify signers with OTP or PIN, and seal every matter with a tamper-evident, court-defensible record.
Unlimited envelopes · ESIGN & UETA · No credit card
Recipients0/3 signed
DCParty ASigning
RSParty BWaiting
WDWitnessWaiting
Compliant & secure by designESIGNUETAeIDASAES-256 · TLS 1.2+
EVIDENCE, NOT JUST A PDF
Every signature becomes court-defensible evidence.
Most tools hand you a signed PDF. A signature only holds up when you can prove four things about it. Here is what Document eSign records behind a single signature - the package you would put in front of a court.
Exhibit A
Certificate of completion
Settlement Agreement - Doe v. Acme
Envelope #DE-4821 · 2 signers · sealed
01
Sent for signature
Paralegal
10:02 AM
02
Opened & viewed
Client · 73.12.x.x
10:14 AM
03
Consent agreed
Your ESIGN wording
10:15 AM
04
Identity verified
Email OTP
10:15 AM
05
Signed
Client · 73.12.x.x
10:17 AM
PAdES-B sealedSHA-256 a91f…7c4e TSA timestamp
Intent to sign
The signer deliberately applied their signature, logged as an action.
Consent to e-sign
Captured in your own disclosure wording before signing began.
Attribution
Bound to the signer's email, IP, and verification method.
Integrity
Sealed so any later edit breaks the PAdES-B signature.
5,000+
businesses signing since 2021
20+
countries signing worldwide
Unlimited
envelopes on the free plan
Audit-grade
trail on every signed document
DEFENSIBLE
An append-only audit trail behind every signature
Every event - sent, opened, consented, verified, signed - is captured on a tamper-evident log and rendered into a certificate of completion: who signed, when, from where, and how they were verified.
Append-only audit log per envelope
IP, device, and verification method recorded
Exhibit-ready certificate of completion
app.documentesign.com/documents/mutual-nda
Audit trailRecording
Sentto Alex Rivera10:42
Viewed192.0.2.41 · Chrome · Austin, US10:51
ConsentESIGN disclosure accepted10:52
CONSENT
Capture consent in your own wording
Replace the default ESIGN notice with your own disclosure text per template or workspace. The signer agrees before signing, and the consent, timestamp, and IP are written to the record.
Bespoke consent text for regulated matters
Set per template or per workspace
Consent recorded on the certificate
documentesign.com/sign/9f2a
Before you sign
Electronic record & signature consent
Continue to sign
Consent, time & IP recorded on the audit trail
SEALED
Tamper-evident PAdES seal on every completed PDF
Completed documents carry a SHA-256 hash and an embedded PAdES-B signature, with an independent TSA timestamp on paid plans - verifiable in any reader, with nothing auto-deleted.
PAdES-B, verifiable in Adobe Acrobat
Independent TSA timestamp on paid plans
Matters kept until you remove them
Adobe Acrobat · Mutual NDA (signed).pdf
Verify the seal
Verifying signatures…
Alex Rivera
Verifiable in any PDF reader - no proprietary tool
USE CASES
Use cases for electronic signatures in law firms.
Almost every document a firm sends can be signed electronically under the ESIGN Act and your state’s UETA, each carrying the same legal weight as wet ink with a full audit trail. The narrow exceptions are instruments a statute requires to be notarized or wet-signed, such as wills and certain trusts.
Are electronic signatures binding for legal documents?
In most cases, yes. A legal electronic signature carries the same legal weight as wet ink in the United States: engagement letters, settlements, NDAs, and the vast majority of legal agreements signed electronically are valid under the federal ESIGN Act of 2000 and state UETA laws.
Outside the US, the same holds under the EU’s eIDAS regulation, where Document eSign meets the Simple (SES) and Advanced (AdES) electronic signature standards.
When a signature is challenged, the audit trail is what settles it. Document eSign records each signer’s email and IP address with a timestamp for every action - sent, opened, consented, verified, and signed - then binds the finished document with a PAdES-B seal. That seal is a cryptographic fingerprint of the file at the instant of signing: change a single character afterward and the seal no longer matches, so any compliant reader flags the document as altered.
Wills, certain trusts, and instruments a statute requires to be notarized or wet-signed may still require traditional execution, and Document eSign does not provide remote online notarization - confirm the rule for the specific document and jurisdiction. Almost every other legal agreement can be signed electronically.
What makes a signature hold up
Intent to sign - the signer deliberately applies their signature
Consent to sign electronically - captured in your wording before signing
Attribution - the signature is tied to the signer, their email, and their IP
A retained record - a tamper-evident copy and audit trail you can reproduce
Electronic signatures for every legal agreement.
Send an engagement letter, settlement, or NDA for signature and keep a defensible, audit-ready record of every signer.
Settlement AgreementLegal · 2 signersClient signatureDate16 Jun 2026
FAQ
Legal e-signatures, answered.
Are electronic signatures legally binding for legal documents?
In most cases, yes. Electronic signatures carry the same legal weight as wet ink under the U.S. ESIGN Act of 2000 and state UETA laws, and under the EU's eIDAS regulation, provided four things are present: the signer intended to sign, consented to sign electronically, the signature is attributed to them, and a record is retained. Document eSign captures all four on every envelope. A few instruments are the exception - wills, certain trusts, and documents that statute requires to be notarized or wet-signed may still need traditional execution - so confirm the rule for your specific document type and jurisdiction. For engagement letters, settlements, NDAs, and the vast majority of legal paperwork, an e-signature with a complete audit trail is binding and enforceable.
Are e-signed contracts admissible and defensible if challenged?
Yes. Every envelope produces a certificate of completion backed by an append-only audit trail that records each signer's identity details, the timestamp and IP for every action - sent, opened, consented, verified, and signed - and the verification method used. The finished PDF is sealed with a SHA-256 hash and an embedded PAdES-B signature, so any change to a single character after signing breaks the seal and is flagged as altered in any standards-compliant reader. That package - the trail plus the cryptographic seal - is the evidence you would put in front of a court to prove who signed, that they intended to, and that the document has not been touched since. It is materially stronger than a scanned wet-ink copy, which carries none of that metadata.
Can I e-sign an NDA or engagement letter?
Yes. Build the NDA or engagement letter once as a reusable template with fields for the party's name, date, and signature, then send it for signature - the signer completes it in the browser with no account and nothing to install. For routine NDAs you can publish a public signing link, so a counterparty can open, agree to your consent wording, and sign in a couple of minutes from any device. Each completed document comes back sealed with a certificate of completion and the full audit trail, and the template is reusable, so the next engagement letter or NDA goes out without rebuilding the document. Mutual and one-way NDAs are both supported, with routing if more than one party signs.
Can I use my own consent and disclaimer wording?
Yes. You can replace the default ESIGN consent notice with your own legal text, set either per template or across the entire workspace, which matters when a regulated matter requires specific disclosure language. The signer is shown your wording and must agree to it before the document opens for signing, and that agreement - the exact text, the timestamp, and the signer's IP address - is written to the certificate of completion alongside the signature. That means the consent itself becomes part of the defensible record, not a separate step you have to evidence later. Firms commonly use this for conflict waivers, fee agreements, and authorization forms where the disclosure wording is part of what makes the signature enforceable.
Can I verify a signer's identity before they sign?
Yes. Require an emailed one-time passcode (OTP) so the signer must enter a code sent to their email before the document opens, or set a per-signer access PIN that you share separately out-of-band, so only the intended recipient can sign. For either method, the verification type, the time it happened, the signer's IP address, and their device are all recorded on the certificate of completion next to the signature, so the proof of who signed travels with the document. This matters most on high-value settlements and agreements where attribution is worth documenting. SMS one-time-passcode verification is coming soon as an additional phone-based factor.
Can I add a witness to a signing?
Yes. Add the witness as a recipient with their own signing step and a position in the routing order, so they sign after the principal - the same way you would arrange a witnessed wet-ink execution. The witness's action is timestamped on the same append-only audit trail as the principal signers, with their email and IP recorded, and it appears on the single certificate of completion for the envelope. That keeps the witnessed signature and the principal signature in one tamper-evident record rather than across separate documents, which is what you want if the execution is ever questioned. Use it for affidavits, declarations, and any instrument your jurisdiction asks to be witnessed.
Can clients sign legal documents from their phone?
Yes. Signing runs entirely in the mobile browser, so a client can review and sign an engagement letter, settlement, or NDA from a phone or tablet with nothing to install and no account to create. The signer taps the secure link in their email, reviews the document, agrees to your consent wording, and signs by typing or drawing - producing the same legally binding signature and the same audit trail they would get on a laptop. This is what makes remote representation practical: a client travelling or in another state can complete their part of a matter in a few minutes, and you see it land in your workspace, sealed, the moment they finish.
Does Document eSign provide remote online notarization?
No. Document eSign provides electronic signatures with OTP or PIN identity verification and a tamper-evident certificate of completion, but it does not provide remote online notarization (RON), where a commissioned notary witnesses the signing over live video. For any document that must be notarized - certain deeds, some affidavits, and instruments your jurisdiction requires a notary to execute - you will need a separate RON provider or in-person notary, and you should confirm the exact requirement for that document and state. For the very large set of legal documents that do not require notarization, an e-signature with a full audit trail and PAdES seal is sufficient and defensible.
Will our closed matters stay accessible?
Yes. Nothing is auto-deleted or expired - a signed matter stays in your Document eSign workspace until you choose to remove it, so a file you closed two years ago is still there with its certificate intact. You can export any completed PDF and its audit trail at any time, and nothing is locked to the platform, so you keep your own copies in whatever system your firm already uses for matter retention. On paid plans, completed documents also carry an independent TSA timestamp, which anchors the signing time to a trusted third party rather than relying solely on our records - useful for long-lived agreements that may be examined years after signing.
Is there a free plan for solo attorneys?
Yes. The Free plan includes unlimited envelopes and two reusable templates with a full audit trail on every document, which is enough for a solo attorney to send engagement letters, NDAs, and settlements without paying or entering a card. As a firm grows, Business and Enterprise add team members, custom consent and disclaimer wording, single sign-on (SSO), a bring-your-own signing domain, and a dedicated account manager - but the core signing, the PAdES seal, and the legal validity are identical on every plan, including Free. You are not buying enforceability on the higher tiers; you are buying scale, branding, and administrative control.
Create your free forever account, upload an engagement letter or NDA, and route it for signature in minutes. Unlimited envelopes, a defensible audit trail on every document, no credit card.
Unlimited envelopes on Free Tamper-evident PAdES seal Audit trail on every document