MELBOURNE — Australia’s Federal Court ruled Monday that a litigant may serve court papers on a former Victorian magistrate through WhatsApp, finding that repeated successful deliveries made the messaging account reasonably likely to bring the case to his attention.
Justice Angus Lenehan authorized substituted service on Richard Pithouse in CLZ26 v State of Victoria, a proceeding brought under the Australian Human Rights Commission Act.
What persuaded the court
The applicant had tried conventional methods first. A process server could not complete personal service, documents sent by express post were returned and a subpoena produced only a residential address that did not solve the problem.
Lawyers then sent case documents to Pithouse’s phone number on several dates. Screenshots showed the messages had been delivered, and a WhatsApp voice call connected and rang even though it was not answered. Justice Lenehan inferred that the number remained active and was associated with a device capable of receiving communications.
The order permits the originating application, statement of claim and related documents to be sent as PDF attachments. Service will be treated as complete one day after transmission, or on the date of the order for papers already sent.
Procedure follows communication
Substituted service does not relax the requirement that a respondent receive fair notice. It changes the method when ordinary personal service is impracticable and the alternative is likely to reach the person.
The judgment is a concise example of courts adapting long-established due-process principles to modern evidence — delivery indicators, account activity and a connected call can together establish that a messaging platform is more reliable than an unused physical address.
Substituted service is about notice, not convenience
Personal service remains the default because a lawsuit can affect property, reputation and legal rights even when the defendant never participates. A court substitutes another method only when ordinary service is impracticable and the proposed route is reasonably likely to bring the documents to the person’s attention.
The order therefore does not establish that WhatsApp is always sufficient. It rests on a specific evidentiary chain — failed physical attempts, a known number, delivery indicators on multiple dates and a call that reached an active account. Another applicant with an unverified number or a single unread message could receive a different answer.
What digital proof can and cannot show
Two ticks can support an inference that data reached a device. They do not prove that the intended person read the attachment, understood it or still controls the account. Courts manage that uncertainty by considering the evidence as a whole and by specifying when service is deemed complete.
Lawyers using a messaging platform should preserve screenshots, timestamps, the file actually sent and evidence connecting the number to the respondent. They should avoid sending sensitive court material more broadly than the order permits and consider whether encryption, device sharing or a changed number creates a privacy or reliability problem.
A practical consequence for litigants
The ruling prevents a person from making a proceeding impossible merely by remaining unavailable at a physical address when a reliable digital channel exists. It also protects the respondent by requiring judicial approval before an informal message takes the place of formal service.
Once deemed served, procedural deadlines can begin. A recipient who ignores the message may risk default steps, although a court can later consider whether actual notice failed and whether fairness requires additional time.
The broader procedural shift
Courts around the world have allowed service by email, social media and messaging applications in suitable cases. The principle has not changed — the method must be reasonably calculated to give notice. What has changed is the evidence available to prove where a person can actually be reached.
The judgment gives practitioners a useful roadmap: exhaust conventional methods, verify the digital account, document successful delivery and ask for a precise order rather than assuming that a message equals service.
