Are e-signatures actually legal?
Yes. They have been since June 30, 2000, when the Electronic Signatures in Global and National Commerce Act (ESIGN Act) was signed into federal law. The ESIGN Act gives electronic signatures and electronic records the same legal weight as handwritten signatures and paper records for almost every transaction in interstate commerce.
On top of that, 49 states (plus DC, Puerto Rico, and the Virgin Islands) have adopted the Uniform Electronic Transactions Act (UETA), which mirrors the ESIGN Act at the state level. New York is the lone holdout, but it has its own equivalent law (the Electronic Signatures and Records Act).
What the law actually requires for an e-signature to be valid:
- Intent to sign. The person signing has to actually mean it. Clicking "I agree" with full knowledge of what's in the document counts.
- Consent to do business electronically. Both parties have to be okay with using electronic methods.
- Association with the record. The signature has to be linked to the document somehow — embedded in the PDF, attached via an e-sign platform, or otherwise tied to the file.
- Record retention. The signed document has to be storable and reproducible by both parties.
That's the entire legal bar. Notice what's not on the list: no requirement that the signature look like cursive, no requirement to use a specific platform, no requirement to pay for anything.
In Williamson v. Bank of New York Mellon (2014) and dozens of similar cases, courts have upheld typed names, drawn signatures, and even checkbox-style "I agree" clicks as valid signatures. The legal question isn't "did this look like a real signature?" — it's "can we prove the right person intended to sign this?"
The three types of e-signatures
Not all electronic signatures are created equal. There are three tiers, used for different stakes:
1. Simple Electronic Signature (SES)
Anything that indicates intent to sign. Typing your name in a contract field. Drawing with your finger on a phone screen. Clicking an "Agree" button. This is what 95% of everyday transactions use, and it's legally binding for almost everything.
2. Advanced Electronic Signature (AES)
An SES with extra steps: identity verification (often via email or SMS), tamper-evident seals on the document, and an audit trail showing who did what when. This is what most dedicated e-sign platforms default to. Not technically required by US law for most documents, but it's what makes a signature easier to defend in court.
3. Qualified Electronic Signature (QES)
Backed by a digital certificate from a Trusted Service Provider, using PKI cryptography. This is European-style (EU eIDAS regulation) and is rarely needed for US-only transactions.
For nearly anything you'd need a contract for in daily life — leases, bills of sale, NDAs, freelance agreements, consent forms — a Simple Electronic Signature is plenty.
How to e-sign a PDF (the actual steps)
The fastest path depends on what device you're on. Here's the honest breakdown.
On a Mac (free, no install needed)
Open in Preview
Double-click the PDF. Mac's built-in Preview opens by default.
Click the markup icon
Top toolbar — looks like a pen tip. Or hit ⌘ + Shift + A.
Click the Sign icon
The signature button looks like a cursive squiggle. Click "Create Signature."
Sign
Use your trackpad to draw, or hold a signed paper up to your camera. Mac will auto-trace it.
Place & save
Drop your signature on the line, resize if needed, then File → Save. Done.
On Windows (free, requires Adobe Reader)
Windows doesn't have a native PDF editor with signing built in (yet — Edge has limited markup but no signature library). The free path:
- Download Adobe Acrobat Reader DC (free at adobe.com — be careful not to accidentally start an Acrobat Pro trial, which is paid).
- Open the PDF, click "Fill & Sign" in the right-hand toolbar.
- Click "Sign yourself" → "Add Signature" → type, draw, or upload an image.
- Click where the signature line is, drop it, and resize.
- Save → File → Save As (keeps the original blank, optional).
On your phone (iOS or Android)
iOS: Open the PDF in the Files app or Mail. Tap the markup icon (pen tip in a circle) → tap the "+" → "Signature" → draw with your finger. Place, resize, save.
Android: Open the PDF in Google Drive or your default PDF viewer. Many phones include a markup tool — if not, install Xodo or Adobe Acrobat Reader (both free, both let you draw and sign).
Don't print, sign, scan, and email back. Beyond being slower than e-signing, scanned signatures often produce huge file sizes and lose document quality. They're also not actually more legally binding than a properly placed e-signature — and in many cases they're harder to authenticate later.
The free e-sign tools you already have
If you only sign documents occasionally, you don't need a subscription. Your computer and phone already have what you need built in:
Apple Preview (Mac)
Best for: Mac users. Already installed. Trackpad signature capture is genuinely good — hold a signed paper up to your camera and it'll auto-trace it.
Adobe Acrobat Reader DC (Windows)
Best for: signing PDFs on Windows. Industry standard, full Fill & Sign features in the free version. Be careful not to accidentally start a Pro trial.
iOS Files / Mail markup
Best for: iPhone and iPad. Open the PDF, tap the markup icon, tap "+", choose Signature, draw with your finger. Save and share.
Android PDF markup
Best for: Android phones. Most modern devices have a markup tool in their default PDF viewer or Google Drive. If yours doesn't, the official Adobe Acrobat Reader app is free.
For one-off signing, use the tool that's already on your device. Don't sign up for anything you don't need. Don't enter a card for a "free trial" of an e-sign platform — most of those convert to $20-$40/month subscriptions that are notoriously hard to cancel.
When the built-in tools aren't enough
Free OS tools are great for signing a single document yourself. But they fall short when you need a real workflow. Specifically:
- Multi-party signing flows — landlord, tenant, co-signer, witness, all signing in sequence with reminders.
- Audit trails and certificates of completion — court-admissible records of who signed what when.
- Templates with reusable fields — for businesses sending the same NDA or service agreement repeatedly.
- Bulk send — sending the same document to dozens of contractors or employees at once.
- Compliance certificates for HIPAA, FINRA, or other regulated workflows.
- Real document tracking — knowing whether the other party opened, viewed, or signed the document.
That's the gap dedicated e-sign platforms exist to fill. It's also exactly what we're building into DocsGenie next.
eSignature is the most-voted feature on our roadmap, and we're shipping it. Once live, you'll be able to generate a document with DocsGenie (or use AI Draft to create a custom one) and send it for signature in the same flow — multi-party, audit trail, the whole workflow.
It's powered by DoxFlowy, our sister product within the Useful Media family. Vote for eSignature on our roadmap to get notified when it ships.
What documents you can't e-sign
The ESIGN Act carves out a small list of documents that still require wet-ink (handwritten on paper) signatures:
- Wills, codicils, and testamentary trusts. A few states allow electronic wills (Nevada, Indiana, Arizona, Florida among them), but most require handwritten signatures plus witnesses.
- Family law documents — adoption papers, divorce decrees, parental rights terminations.
- Court orders, notices, and pleadings. Some courts accept e-filing, but the underlying documents typically still need traditional signatures.
- Notices of foreclosure, eviction, or repossession.
- Notices of cancellation of utilities (gas, electric, water, phone) where required by state law.
- Notices of life or health insurance benefit changes.
- Documents required to accompany hazardous materials in transit.
- Product recalls involving health or safety risks.
For everything else — leases, employment agreements, NDAs, vendor contracts, freelance gigs, bills of sale, terms of service, healthcare consents (with HIPAA-compliant tools), real estate purchase agreements (state-dependent) — e-signatures are valid and routine.
E-signing vs. notarization (they're not the same thing)
This trips people up constantly. Let's separate them:
An e-signature proves you signed something.
A notarization proves that you signed it in front of a notary, who verified your identity. Notarization is a separate, additional step required for some documents — it doesn't replace signing.
Documents that typically require notarization (in addition to signing):
- Real estate deeds and mortgages in all 50 states.
- Vehicle title transfers in some states (e.g., Louisiana, Pennsylvania).
- Powers of attorney in most states.
- Affidavits and sworn statements for court use.
- Self-proving wills (the will itself doesn't need notarization, but the self-proving affidavit speeds probate).
Good news: online notarization (Remote Online Notarization, or RON) is now legal in 47 states. Several reputable services connect you to a commissioned notary via video call who can verify your ID and notarize an e-signed document. Typical cost: around $25 per notarization.
If your document needs both a signature and a notary, RON services let you do both online in about 10 minutes. If it just needs a signature, skip the notary entirely.
5 common e-signing mistakes (and how to avoid them)
1. Forgetting to date the signature
Almost every legal document has a signature line and a date line. Most platforms auto-fill the date when you sign, but if you're using a free tool that just lets you place a signature image, double-check that you've also typed the date next to it.
2. Using a different name than what's on the document
If the contract names "Robert Williams" but you sign as "Bob Williams," that's usually fine — courts accept nicknames as long as it's the same person. But if there's any chance of dispute, sign exactly as your name appears in the document.
3. Signing without reading
The biggest e-signature scams aren't fake signatures — they're real signatures on documents people didn't read. Before you sign anything: scroll all the way through, read the entire document, and confirm you understand what you're agreeing to.
4. Not saving a signed copy for yourself
Most e-sign platforms automatically deliver a signed copy to both parties. If you e-sign in Preview or Adobe Reader and email the file yourself, save a copy of the signed PDF locally before sending.
5. Confusing typed names with signatures in messaging apps
Texting "I agree to pay $500 — Bob" might or might not be a binding signature, depending on context. To be safe, use a real document and a real e-signature for anything you'd be upset about losing.
Frequently asked questions
Are electronic signatures legally binding in the United States?+
Yes. The ESIGN Act (2000) and UETA (adopted by 49 states plus DC) give electronic signatures the same legal force as handwritten ones for nearly all transactions. The few exceptions are listed in the "What you can't e-sign" section above.
How can I e-sign a PDF for free?+
If you're on Mac, use Preview (already installed). On Windows, install free Adobe Acrobat Reader DC. On phones, use the built-in markup tools. For one-off signing, you don't need to sign up for anything.
Does an e-signed document need to be notarized?+
Notarization is a separate question from signing. Most documents don't need notarization at all. Documents that do (deeds, vehicle titles in some states, powers of attorney) need it whether you sign by hand or electronically.
What's the difference between an e-signature and a digital signature?+
An e-signature is any electronic mark indicating intent to sign. A digital signature is a specific cryptographically-secured type of e-signature using public key infrastructure (PKI). For most everyday contracts, a basic e-signature is all you need.
Can I e-sign on my phone?+
Yes. iOS and Android both have built-in PDF markup tools. Open the PDF, tap the markup icon, draw your signature with your finger, save and share.
Will a court accept a signature I drew with my mouse?+
Yes. Courts routinely accept mouse-drawn, trackpad-drawn, and finger-drawn signatures. What courts care about is intent to sign and authentication. The visual quality of the signature itself is irrelevant.
Does DocsGenie offer eSignature?+
Not yet — but it's the most-voted feature on our roadmap and we're actively building it, powered by our sister product DoxFlowy. Vote for eSignature on our roadmap to get notified when it ships.
You'll need a document
before you can sign one
DocsGenie generates 800+ attorney-reviewed legal documents — leases, bills of sale, NDAs, contracts. Or use AI Draft to create something custom. Sign with any free tool from this guide.