Is a WhatsApp or Email Agreement Legally Binding in India? What the Courts Have Said
A deal agreed over WhatsApp or email can be a binding contract in India, and it can also be the beginning of a dispute. What the Supreme Court has said, how such messages are proved, and the three habits that keep informal agreements from becoming formal problems.
"Done, go ahead" typed into WhatsApp at 11 pm has started more Indian commercial disputes than most people realise. The answer to whether such a message creates a binding contract is "it can", which is both the reason to be careful and the reason to move real agreements into a proper document. This explainer sets out the law, two Supreme Court decisions, and the practical habits for businesses. Position as of October 2026.
The law does not require a signed document
Section 10 of the Indian Contract Act, 1872 requires offer, acceptance, free consent, lawful consideration and object, and competent parties. It does not require writing, except where another law does (leases over a year, for example). Section 10A of the IT Act, 2000 confirms that where proposals and acceptances are expressed in electronic form, the contract "shall not be deemed to be unenforceable solely on the ground that such electronic form or means was used". An email or chat exchange that contains all the essential terms, and an unambiguous acceptance, can therefore be a contract.
Two Supreme Court decisions
Trimex International FZE Ltd. v. Vedanta Aluminium Ltd. (22 January 2010). The parties exchanged emails on a supply arrangement; a formal contract was contemplated but never signed. The Court held the contract concluded by the email exchange, stating that once a contract is concluded, "the mere fact that a formal contract has to be prepared and initialed" by the parties does not affect its acceptance.
Ambalal Sarabhai Enterprise Ltd. v. KS Infraspace LLP Ltd. (6 January 2020). A property deal was negotiated by email and WhatsApp; the High Court had found a concluded contract. The Supreme Court described the WhatsApp messages as "virtual verbal communications" and "matters of evidence" whose meaning must be proved at trial, held that the words "final draft" in an email "cannot be determinative by itself", and found that whether a concluded contract existed "is itself a matter for trial". It set aside the interim injunction.
Read together: messages can make a contract, but whether they did depends on what was said, whether acceptance was communicated, and what the evidence shows. That uncertainty is the cost of informality.
How messages are proved
Since 1 July 2024, electronic records are proved under section 63 of the Bharatiya Sakshya Adhiniyam, 2023, which requires a certificate identifying the record and the device that produced it, signed by the person in charge. For a WhatsApp chat, that usually means the phone owner's certificate and, often, the device itself. Screenshots alone are weak; exports with metadata and the original device are stronger. The Supreme Court in Arjun Panditrao Khotkar v. Kailash Kushanrao Gorantyal (14 July 2020), under the predecessor provision, treated the certificate as a condition precedent unless the original device is produced.
Three habits for businesses
- Decide where commitments are made. An internal rule that commercial terms are confirmed only through the contract workflow, and that chat and email are for discussion, protects against accidental contracts. Train sales and procurement on it.
- Use "subject to contract" when you mean it. If a message is meant to be a step in negotiation and not an acceptance, say so. Ambalal Sarabhai turned partly on whether "final draft" meant agreement; clear words avoid the argument.
- Move it to a document fast. When terms are agreed in chat, generate the agreement from a template, stamp it where chargeable, and sign it electronically the same day. The signed, stamped, audit-trailed document is what you want to rely on, not the chat.
When the informal agreement is all you have
If a counterparty backs out of a deal agreed by email or chat, preserve the full thread on the original device, do not edit or forward selectively, note the dates and who communicated acceptance, and take advice early. If the deal involved immovable property or a lease over a year, remember that the writing and registration requirements of other laws still apply.
Where Legatio fits. Legatio turns an agreed deal into a stamped, e-signed document with an audit trail in minutes, which is the practical answer to the risk this article describes. The law on informal contracts is the same whichever tools you use.
Position stated as of October 2026. General information, not legal advice.