All Signmee users are able to select the option to receive notifications for new Signmee notes via Whatsapp.
To do this log into your Signmee account at https://signmee.meesys.com/
Select 'My Settings' in the red banner at the top of the page.
Click on the 'My details' tab.
Here you will have an option to select where your Signmee alerts are sent to.
Make sure to click on 'save changes' after making changes to your settings.