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GET
Famulor 1.0 API (legacy). This page applies only to Famulor 1.0 (app.famulor.de) and is retained for legacy compatibility. For the current platform, use the Famulor 2.0 API reference.
Check whether an active 24-hour WhatsApp messaging window exists between your Famulor WhatsApp sender and a specific recipient. Use this endpoint to determine whether you can send freeform messages or need to use a template message.

Query Parameters

integer
required
The ID of the WhatsApp sender (obtained from the Get Senders endpoint)
string
required
The recipient’s phone number in international format (e.g., +1234567890)

Response Fields

boolean
Whether the request was successful
boolean
Whether a conversation exists with this recipient
integer
The conversation ID (only present when has_conversation is true)
string
The customer’s name if available (only present when has_conversation is true)
string
ISO 8601 timestamp of the customer’s last message (only present when has_conversation is true)
object

Error Responses

Typical Workflow

Use this endpoint as part of a WhatsApp message-sending flow:
  1. Check session status before sending a message.
  2. If can_send_freeform is true → use Send Freeform Message.
  3. If requires_template is true → use Send Template Message.

Notes

  • The 24-hour window is based on the customer’s last inbound message timestamp.
  • Each new customer message resets the 24-hour timer.
  • This endpoint is read-only and does not consume any Famulor balance.