Adds a Context Menu that tries to start a Whatsapp conversation with the selected number
* Don't forget to CONFIGURE first by going to the extension options
** You must have whatsapp installed on your computer
1) Select a mobile phone number with your cursor (there should be no problem if the country code and the mobile code is missing - given you configured the extension correctly)
2) Open the context menu with your secondary click
3) Click on the context menu item for this extension
Whatsapp should open a conversation with the selected mobile phone number (unless that number doesn't use whatsapp, it's invalid or the selection didn't include the whole number)