Are Electronic Signatures Legally Binding? ESIGN, UETA, and eIDAS Explained

Are electronic signatures legally binding?

In most jurisdictions, yes. Electronic signatures are legally enforceable in the United States under the ESIGN Act and UETA, in the European Union under eIDAS, and in Korea under the Electronic Signature Act — the same legal foundations that mainstream e-signature services rely on. What varies is not whether an e-signature can be valid, but which tier of signature you are using and how much assurance the law attaches to it. This article explains the main frameworks and states plainly where Sign For Free sits within them.

This is general information, not legal advice. For a specific dispute, consult a lawyer in the relevant jurisdiction.

United States: ESIGN and UETA

Two laws give electronic signatures legal effect in the US:

• The ESIGN Act (2000) — a federal law establishing that a signature, contract, or record may not be denied legal effect solely because it is in electronic form.
• UETA (Uniform Electronic Transactions Act) — adopted by nearly every state, providing the same principle at the state level.

Together they mean that, for most everyday agreements, an electronic signature carries the same weight as a handwritten one, provided the usual contract conditions are met: the signer intended to sign, consented to do business electronically, the signature is associated with the record, and the record is retained and reproducible. Notably, the law does not mandate a specific technology. A typed name, a drawn signature, or a click can all qualify.

European Union: eIDAS and its three tiers

The EU's eIDAS regulation is more explicit. It defines three tiers of electronic signature, each with increasing assurance:

• SES — Simple Electronic Signature. The baseline: any data in electronic form used to sign. Admissible as evidence; its weight is assessed case by case.
• AES — Advanced Electronic Signature. Adds requirements: uniquely linked to and capable of identifying the signer, created under the signer's sole control, and tamper-evident so any later change is detectable.
• QES — Qualified Electronic Signature. An AES created with a qualified signature-creation device and backed by a qualified certificate from an accredited trust service provider. Only QES is granted the explicit legal equivalent of a handwritten signature across the EU.

The practical takeaway: most business e-signatures (including standard DocuSign signatures) are SES, sometimes with AES-like properties. QES is a specialized, identity-verified tier used for high-stakes regulated transactions.

Korea: the Electronic Signature Act

Korea's Electronic Signature Act recognizes general electronic signatures. Following a 2020 reform that ended the monopoly of the old accredited-certificate system, a general electronic signature can have legal effect without a government-accredited certificate, with its evidentiary weight assessed on the facts. Sign For Free's model corresponds to a general electronic signature under this law.

Where Sign For Free fits — precisely

To be accurate and avoid overstating:

• Under eIDAS, Sign For Free is a Simple Electronic Signature (SES) that includes some AES-like functionality — specifically the tamper-evidence and integrity properties, because every completed document is cryptographically sealed and independently verifiable. We describe it as "eIDAS SES (with partial AES functionality)."
• Under US ESIGN/UETA and Korea's Electronic Signature Act, it is a valid electronic / general electronic signature, enforceable in most jurisdictions like other e-signature SaaS.
• It uses the same self-claim trust model as DocuSign — the signer asserts their identity (via OAuth for requesters and email self-attestation for signers) rather than a government-issued qualified certificate — plus the ability to verify the document independently, forever.

What Sign For Free is not

We are careful about the words we use:

• It is not a "qualified electronic signature" (QES).
• It is not "certified" or the guaranteed legal "equivalent of a handwritten signature."
• It does not provide a qualified timestamp from an accredited timestamping authority. The time of signing is a self-claim timestamp. If your use case requires court-grade, qualified time-of-signing trust, Sign For Free is not the right tool.

Like all e-signature SaaS, it also cannot guarantee true WYSIWYS ("what you see is what you sign") at the level of a dedicated secure signing device — an honest limitation shared across the category.

FAQ

Will a Sign For Free signature hold up in court?

An e-signature is generally admissible and enforceable in most jurisdictions under ESIGN/UETA and eIDAS SES, the same as other e-signature SaaS. Enforceability in a specific dispute still depends on the facts of the agreement and the applicable law — consult a lawyer for your situation.

Is a Simple Electronic Signature "weaker" than a Qualified one?

QES carries the strongest, explicitly-equivalent legal status in the EU because it involves accredited identity verification. SES is admissible and widely used for ordinary business; its weight is assessed case by case. Most everyday agreements do not require QES.

Does Sign For Free comply with eIDAS?

Sign For Free operates as an eIDAS SES with partial AES functionality (tamper-evidence and independent verifiability). It does not offer QES and does not issue qualified certificates or qualified timestamps.