eSignature for legal · Updated
E-signatures for law firms and legal teams
Lawyers need signatures they can defend. Engagement letters, NDAs, settlement documents and agreements must be signed quickly and backed by evidence.
eSignSimple records timestamps, IP addresses and a SHA-256 document hash in an audit trail and certificate of completion for every document.
Our take: lawyers are right to be skeptical of e-signature marketing. A signature is only as good as the evidence around it, and a pretty signing page proves nothing on its own. What matters is who received the link, when they opened it, what exactly they signed and whether the file has changed since.
That is why every completed eSignSimple document carries a SHA-256 fingerprint that anyone can check on our public verify page. Opposing counsel does not need to trust us; they can upload the PDF and see whether it matches the fingerprint recorded at completion.
What slows down paperwork in legal?
Evidence of signing
The certificate of completion documents each signing event and shows whether the document changed. We keep the evidence in a plain, readable certificate rather than a proprietary format only our support team can interpret.
Client convenience
Clients sign from any device without creating an account. That matters for individual clients, who are often signing an engagement letter on a phone between other appointments.
Knowing the limits
Some documents need wet ink, witnesses, notarization or qualified signatures. Simple e-signatures are not suitable for everything. We would rather tell you clearly where a simple electronic signature is the wrong tool than have a client find out in court.
Knowing who actually signed
eSignSimple shows that the signature came from someone who controlled the signer's email inbox, with IP address and device. It does not verify ID documents, so for high-stakes documents confirm the client's email address through a channel you already trust.
Multi-party documents
Settlements and shareholder documents often have four or more signatories. Collecting counterparts by email and stitching scanned pages together invites mistakes; one document with every party on it does not.
Which documents do legal teams sign with eSignSimple?
| Document | Who signs | How it works in eSignSimple |
|---|---|---|
| Engagement letter | Client, responsible attorney | Client signs first, attorney countersigns; the certificate goes into the matter file. |
| NDA | Both parties | Start from the NDA template or upload your firm's Word version; it is converted to PDF. |
| Consulting or service agreement | Client, provider | Use the service agreement as a base and send with signing order. |
| Promissory note or loan agreement | Borrower, lender | Send the promissory note; consider confirming the borrower's email by phone first, since we do not offer ID verification. |
| Wills, court filings, QES-only documents | Varies | Not a fit. Use wet ink, a notary or a qualified trust service provider as required. |
| Settlement agreement | Each party, then counsel if required | Use the settlement agreement with signing order; if the settlement needs court approval or filing, follow the court's own process for that step. |
| Letter of authorization | Client | Send the letter of authorization so the firm can deal with a bank, insurer or agency on the client's behalf. |
| Operating agreement | All LLC members | Add every member to the operating agreement in one document instead of collecting counterparts. |
Which legal documents can be signed electronically?
- Engagement letters
- NDAs
- Service and consulting agreements
- Partnership and operating agreements
- Promissory notes
- Settlement agreements
How do you get the most out of e-signatures in legal?
- Confirm whether a document type is excluded from e-signature laws in your jurisdiction (for example wills and some court filings).
- Keep the certificate of completion with the signed PDF.
- eSignSimple provides simple electronic signatures, not qualified electronic signatures.
- For engagement letters, use signing order so the client signs first and the responsible attorney countersigns last.
- Store matter-critical documents with both the signed PDF and the certificate in your document management system, not only in the signing tool.
- Our take: for cross-border matters in the EU, check early whether the counterparty or a registry requires a qualified electronic signature. It is much easier to plan for QES at the start than to re-sign later.
- When someone signs for a company, add text fields for their full name, title and the entity's name next to the signature, so capacity is recorded on the page.
- Freeze the wording before sending. If anything changes, void and send a new version, so the fingerprint on the certificate matches the text everyone agreed.
- If a colleague asks how signatures are proven, point them to our explainer on what an audit trail is and to how to verify an electronic signature.
Before you rely on an e-signature for a specific document, check the rules where you work: see e-signature law in the United States, the United Kingdom or other countries, and read how we store and protect signed documents.
What evidence does a completed document give us if signing is disputed?
Each completed document carries a certificate of completion appended as its last page. It records each signer's email address, the time they signed, their IP address and their device and browser, plus the SHA-256 fingerprint of the final PDF. The same events sit in the audit trail. If a client later says they never signed, you can show that the link went to their address, when it was used, from what kind of device, and that the PDF in your file is byte-for-byte the one that was completed.
What it does not prove is worth stating plainly: it does not prove who was holding the phone. eSignSimple offers simple electronic signatures with email-based delivery; we do not offer SMS codes, knowledge-based questions or ID document checks. In most disputes that is enough, because the surrounding facts (intake calls, earlier emails, payment of the retainer) point the same way. Where it is not enough, confirm the email address by phone before sending, and keep that note in the matter file.
How do we handle a multi-party agreement without counterparts?
Traditional practice is to circulate counterparts: each party signs a separate copy and the firm assembles a complete set. With e-signatures you can put every party on one document instead. Add each signatory, decide whether order matters, and send once. Without signing order, everyone can sign in parallel; with it, each person is notified only when the previous one has signed.
Use order when it carries meaning: the client before the attorney, investors before the company, or a party who should only sign once a regulator-facing party has. Use parallel signing for agreements where everyone is equal and speed matters. Either way you finish with one PDF, one certificate and one fingerprint, instead of four scans of signature pages that someone has to match to the right draft.
Which matters are outside what a simple electronic signature should handle?
In many jurisdictions, wills and other testamentary documents, many powers of attorney, real property deeds, some family-law documents and court filings either cannot be signed electronically or need witnesses, a notary or the court's own filing system. In the EU, some registries and counterparties require a qualified electronic signature, which eSignSimple does not provide. The rules differ by country and even by court, so check the specific requirement for the specific document.
Our rule of thumb for firms: if the document will be filed with or relied on by a court, registry or public authority, find out what that body accepts before you choose a signing method. If it is an agreement between private parties that only they will rely on, a simple electronic signature with a good audit trail is usually appropriate. See are electronic signatures legally binding for the general picture.
Templates for legal
Related reading
Frequently asked questions
Are e-signatures legally binding for these documents?
In most cases, yes. Simple electronic signatures are recognized under the US ESIGN Act, UETA and the EU eIDAS Regulation. Some documents, such as wills or certain court and real property filings, may need wet ink, witnesses or notarization depending on the jurisdiction.
Does eSignSimple offer qualified electronic signatures (QES)?
No. eSignSimple offers simple electronic signatures with an audit trail. Use a qualified trust service provider when QES is required.
Can I prove a document was not changed?
Yes. The certificate records a SHA-256 hash of the final document, so any later change can be detected.
Is it legal to e-sign client agreements in a law firm?
Engagement letters, NDAs and most commercial agreements can generally be signed with simple electronic signatures under ESIGN, UETA and eIDAS. Wills, many family-law and court documents and some property transfers are excluded or have extra formalities in many jurisdictions. See our legality pages and the local rules of your bar.
Does eSignSimple offer notarization or remote online notarization?
No. Documents that must be notarized or witnessed need a notary or a remote online notarization provider. Use eSignSimple for the agreements around them that do not have those formalities.
Can we upload our firm's own engagement letter?
Yes. Upload it as a Word file or PDF; Word files are converted to PDF before you place fields. Save it as a template once, and each new matter only needs the client's details.
Can opposing counsel check a signed PDF without an account?
Yes. Anyone can upload the PDF on our verify page and see whether its SHA-256 fingerprint matches a document completed on eSignSimple. The check is done on the file itself.
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