How programmatically we can click on special controls from the Mobile App

Hello All,

Does anyone know how programmatically we can tap (click} on special controls in the Mobile App? For example, when a field is decorated with “EmailSend” instead of a user tapping on mail icon, how do we programmatically tap like the user is doing it? In the below code, I will see a mail icon so I want to tap on it from an action button instead of the user doing that.  

update screen XX000000
{
  update container "MyContainer"
  {
    update field "MyField"
    {
        special = EmailSend
    }
  }
}