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WhatsApp notices to your buyers

Reviewed on 5 October 2026

OnBio sends three service notices by WhatsApp to the buyers who accept it at checkout. They are the access after purchase, the booking reminder and the failed payment notice with the button to update the card.

Check if a notice arrived

  1. 1. Click Messages in the side menu.
  2. 2. Find the notice by its order in the WhatsApp tab.
  3. 3. Look at its status, which goes from Sent to Delivered and to Read.

What happens next

The access goes out seconds after payment. The booking reminder goes out 24 hours and 1 hour before, with the time in the buyer's zone. The failed payment notice goes out once per charge, with the amount.

Keep in mind

  • Only those who accepted it at checkout and gave their phone get WhatsApp. Everyone else gets the same notices by email.
  • Notices go out from OnBio's WhatsApp Business number, in the language the buyer paid in.
  • If a booking changes time or is cancelled, the pending reminder is not sent and appears as Not sent.
  • If the buyer answers STOP, they stop getting notices.
  • Your plan includes a number of messages a month. If you go over it, the notices keep going out.

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