Guide · Updated
WhatsApp or a voice call: which to use for customer follow-ups
Use WhatsApp first for most follow-ups: it is cheap, the customer can reply when convenient, and it keeps a written record of what was agreed. Use a voice call for the people who do not reply to messages, for conversations that need back-and-forth, and for customers who are more comfortable speaking than typing. The strongest sequence is both: a WhatsApp message, then a call in the customer's language to whoever stayed silent, with the outcome of each written back to the same customer record.
Where WhatsApp wins
- The customer replies in their own time
- Order details, prices and links arrive in writing
- One message reaches many customers at low cost
- Images, invoices and catalogues fit in the thread
Where a call wins
- Customers who never open or reply to messages
- Questions that need back-and-forth to resolve
- Customers who prefer speaking, or speak a language they rarely type
- Moments where tone matters, like a lapsed customer or a complaint
One sequence, two channels
| Step | Channel | Goal |
|---|---|---|
| 1 | Reach everyone cheaply, in writing | |
| 2 | Voice call | Reach whoever did not reply |
| 3 | Confirm what was agreed on the call | |
| 4 | Person | Take over qualified or complex conversations |
Keep the record in one place
Whatever happens on the call should be visible in the chat history, and the other way round. Otherwise the next follow-up repeats a question the customer already answered.
Frequently asked questions
- Should every follow-up start with a call?
- Usually not. A message first is cheaper and less intrusive; the call is for those who do not reply.
- Can AI voice calls speak the customer's language?
- Yes. Calls in the customer's own language get through to people a single default language misses.
In practice
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