If you want to use WhatsApp in your Umbraco website you can use our Free or Premium WhatsApp Widget.
Umbraco is an Open Source, .Net CMS. This is an option when you want to develop with the .net environment.
Customer: We have the website platform Umbraco. Is it possible to integrate the widget on this platform?
Reply: Yes, you can add Widget WhatsApp with a white label widget and multiple agents using the premium version. For the integration with Umbraco, you can use this guidelines.