Can an AI voice agent send a WhatsApp message during a call?

Why voice plus WhatsApp works

Phone calls are good for conversation and poor for details. Callers struggle to remember an address, a fee structure or a link read aloud. WhatsApp is where most Indian customers already expect to receive this kind of information, so pairing the two gives the caller the warmth of a call and the convenience of text.

How it works technically

The send action is defined as a tool the language model can use, with inputs such as which template to send and the details to fill in. When the caller says 'Mujhe details WhatsApp kar do', the model triggers the tool, the platform sends the message, and the agent tells the caller it is on its way.

• —Template: business-initiated WhatsApp messages use pre-approved templates under Meta's WhatsApp Business rules.
• —Variables: name, date, time, project or course name, filled in from the call.
• —Trigger: during the call when the caller asks, or automatically right after it ends.
• —Number: usually the number being called, after confirming it is on WhatsApp.

Good uses

• —Appointment or site visit confirmation with date, time and location.
• —Brochures, floor plans, course details or price lists.
• —Payment links after a COD order is confirmed or a fee is due.
• —Document checklists for loan or admission follow-ups.

Things to get right

Ask the caller before sending, and confirm the number. Keep messages short and specific to what was discussed, and never send sensitive information the caller did not ask for. Templates need approval in advance, so plan them before launch rather than on the day.

In Outpero

WhatsApp messaging is one of the on-call actions you can switch on per AI employee, alongside calendar booking, spreadsheet updates and custom API calls. Combined with instant lead callback within 30 seconds, it means a new lead can receive a call and the relevant details in writing within minutes of enquiring.