Akka 2: How to pause processing of messages?

Question

On my journey to grasp the Actor model using Akka many questions pop up. Here is another one. Say we have an Actor which has to stop processing messages for a given time because

Answer 1

case object NextEmail
class EmailActor extends Actor {

self ! NextEmail

  def receive = {
    case NextEmail =>
      sendEmailIfAnyToSend
      context.system.scheduler.scheduleOnce(3 seconds, self, NextEmail)                 
  }
}