Accepting to do something offered by the other shall be in writing. It may also be implied unless it is totally unavoidable to assume anything other than acceptance. If goods are sold, the buyer receives them. He may give a receipt of acceptance or he may acknowledge goods without any reservation. In such cases acceptance shall be presumed. In cases of executory contracts there does not arise any question of acceptance unless the contract is signed by both the parties. In case if one of the parties executes a part of the agreement and the other accepts the benefit of it, acceptance of the agreement may be assumed even though there is no written acceptance. The terms of the agreement may provide that unless the acceptance is specifically conveyed, the agreement does not come into force. In such cases the acceptance shall be in writing. In the case of insurance policies, if the term of the agreement provide that the policy will become operative only if the policy is delivered to the party, in such cases mere acceptance of the premium or acceptance recorded in the records of the insurance company cannot be treated as an acceptance by the insurance company till the policy is actually delivered to the party. It means that the insurance company reserves the right to revoke its acceptance till it is conveyed and received by the insured. In the case of gifts, the law requires that the donee shall accept the gift so that the gift may be treated as complete. In case the done accepts a part of the gift only and not the whole there is no question of part acceptance. The donee cannot accept the donation but refuse to answer the liabilities arising therefrom. Partial acceptance of some properties only or partial acceptance of the property without the burden arising therefrom is not permissible. In the case of public auctions, a person may bid for the highest or for the lowest as the case may be, and the striking the bid at that point of time does not arise any question acceptance of the bid unless the acceptance of the bid is conveyed to the bidder. So also is the case with tenders. Unless the tender is accepted, the tenderer cannot assume under any circumstances that the tender is accepted. There is what is called an acceptance for honour. It is something like a surety. A third party may undertake to perform the work under the contract.
[Ref.: Sekshria Exports v. Union of India, AIR 2004 Bom. 35.]