As part of my custom workflow I create EpiServer tasks. I have a requirement to send e-mails to notify users about the task. I see that CreateTask method has NotifyByEmail and DueDate parameters. Now the questions:

1. Can EpiServer automatically send e-mail when task has been created?
   
2. Can EpiSever automatically send e-mail when DueDate is reached? How about one day before? How configurable is that?
   
3. Can EpiServer resolve e-mail addresses from AD? If not, does it provide and extensibility point?
   
4. Does EpiServer provide any extensibility point so that I can replace e-mail sending with eg. sms sending?
   

I am trying to figure out whether EpiServer provides the necessary infrastructure for my needs or should I model this behaviour in my cutom code/workflow.

Thanks in advance,