What Is a Simple Electronic Signature (SES)?

What counts as a simple electronic signature?

Under US law, an electronic signature is broadly defined. The ESIGN Act describes it as an electronic sound, symbol, or process, attached to or logically associated with a contract or other record and executed or adopted by a person with the intent to sign the record. That means almost any deliberate electronic action that shows agreement can be a valid SES.

Everyday examples include:

• typing your name at the end of an email or form
• drawing your signature on a touchscreen
• clicking an "I agree" button
• checking a box next to a signature statement
• using a stylus or finger on a PDF document

The key element is intent. The signer must intend to be bound by the action. Without intent, even the most advanced signature technology will not create a valid signature.

Legal basis in the United States

Two laws make SES legally valid in the United States:

• The ESIGN Act is a federal law passed in 2000. It gives electronic signatures the same legal effect as handwritten signatures for transactions in or affecting interstate or foreign commerce.
• UETA, the Uniform Electronic Transactions Act, is a model state law adopted by 49 states. New York has its own similar statute. UETA covers electronic signatures and records in state-governed transactions.

Neither law requires a specific technology, certificate, or level of identity verification. Instead, they focus on consent to do business electronically, intent to sign, attribution of the signature, and preservation of the record. A properly implemented SES meets these requirements for most documents.

Why SES is enough for most US contracts

Most business documents in the United States do not require a higher level of signature. SES is sufficient for contracts, agreements, approvals, and authorizations where the parties want a clear, defensible record. Courts regularly accept SES as evidence when the surrounding context is documented.

Typical US documents signed with SES include:

• non-disclosure agreements and confidentiality clauses
• service agreements and statements of work
• employment offer letters and onboarding paperwork
• sales quotes and purchase orders
• internal approvals and compliance sign-offs
• lease addenda and vendor contracts

The risk is rarely the signature level. The risk is not being able to prove who signed and whether the document was changed after signing. A good SES platform captures the evidence that matters.

What about the EU and the UK?

The United States uses a technology-neutral, intent-based approach. The European Union uses a tiered system under eIDAS. It defines three levels: Simple Electronic Signature (SES), Advanced Electronic Signature (AES), and Qualified Electronic Signature (QES). The UK retained a similar framework after Brexit.

SES is valid in the EU and UK as evidence, but it is not automatically equivalent to a handwritten signature. Some documents, such as notarial deeds, certain real-estate transfers, and specific employment or court filings, may require QES under national law. If your document has legal effect in the EU or UK, you should confirm the required level with local counsel.

JustSignNow focuses on the US market. Our service is designed for SES under the ESIGN Act and UETA and is not suitable for every EU or UK use case.

How JustSignNow makes SES defensible

JustSignNow is a simple electronic signature platform built for the US market. We focus on making SES legally defensible without adding unnecessary complexity or cost.

Every signature event captures:

• clear consent to sign electronically
• signer email address and authentication method
• IP address, timestamp, and user agent
• SHA-256 document hash to detect any later change
• a Bitcoin-anchored OpenTimestamps audit trail

The OpenTimestamps proof anchors the document hash to the Bitcoin blockchain. That gives you an independent, publicly verifiable record of when the document existed in its signed form. It is a strong piece of evidence if a contract is ever questioned.

When SES may not be enough

SES is powerful, but it is not right for everything. US law excludes some documents from electronic signature statutes, including wills, certain family-law documents, and some court orders. State law may impose additional requirements.

You should also consider a higher assurance level when:

• a regulator or statute specifically requires it
• the transaction is high-value and high-risk
• you need identity verification beyond email ownership
• the document will be enforced outside the United States

When in doubt, ask a lawyer. For ordinary US business documents, SES is the practical, cost-effective choice.

About JustSignNow

JustSignNow is built by Nexis Dev, LLC, located at 131 Continental Dr Suite 305, Newark, DE 19713. We serve the US market with straightforward, SES-focused e-signature tools backed by a transparent audit trail.