Digital signatures, right inside WhatsApp.
No app. No browser. No link.
Send legally binding signature requests directly to WhatsApp. Signers review and confirm inside the chat itself — no app download, no browser, no email hunting.
No credit card required for trial · Cancel anytime
98% open rate
vs. 20% for email
Under 2 min
Average time to sign
180+ countries
WhatsApp coverage
The only e-signature platform with a fully native WhatsApp signing flow — see how we compare
How it works
Three taps. Contract signed.
You send the contract
Upload your PDF, add signature spots, toggle "Send via WhatsApp", and hit send. Takes under 60 seconds.
service-agreement.pdf
2.4 MB · Ready
“Send via WhatsApp” enabled
+55 11 9 9999-8888
SignerSigner gets a WhatsApp message
They receive a branded button message in their WhatsApp with your contract title and a "Sign Document" button.
DottSign
online
Signature Request
“Service Agreement”
DottSign · Secure Electronic Signatures
One tap — signature confirmed
Tapping the button keeps everything inside the chat — phone number verified, legally binding signature applied. No link opens, no browser needed.
DottSign
online
Número verificado ✓
+55 11 9 ···· 8888
Assinatura confirmada
Certificado X.509 emitido · 09:42
Why WhatsApp
The channel your signers
actually check.
98% open rate
WhatsApp messages are read almost instantly. Stop chasing signers over email.
Phone-verified identity
The signer's WhatsApp number is matched against the assigned contact before they can sign. No impersonation.
Zero friction for signers
Signers don't need a DottSign account. They tap the button and confirm right inside WhatsApp — no browser, no download.
Full audit trail
Every delivery, read receipt, and signature is timestamped and stored in your contract audit log.
Same legal weight
WhatsApp signatures carry the same X.509 certificate and legal validity as email-based signatures.
Plans
WhatsApp signatures
start at PRO.
Upgrade once. Send unlimited signature requests via WhatsApp.
15% off — use code WHATSAPP15 at checkout. Valid through May 31.
PRO
For professionals and growing teams.
Enterprise
For organisations with custom needs.
FAQ
Questions about
digital signature via WhatsApp.
Does the signer need a DottSign account?
No. Signers only need WhatsApp. They receive a message with a button, tap it, and complete the entire signature flow without ever leaving WhatsApp — no account required.
Is a digital signature via WhatsApp legally binding?
Yes. The signature carries the same X.509 certificate and audit trail as any DottSign signature. It meets eIDAS and ESIGN Act requirements.
What WhatsApp number is the message sent from?
Messages are sent from the DottSign platform number.
Which countries are supported?
Any country where WhatsApp is available — which is 180+ countries. No restrictions.
What if the signer has a different WhatsApp number?
You assign the signer's phone number when creating the signature spot. We verify the sender number on reply to prevent misuse.
Start sending contracts
via WhatsApp today.
Upgrade to PRO and close deals where your signers already are.
Cancel anytime · Trial available · No lock-in