Explain the benefits of using an email in terms of the portability?

There are some very important benefits of email if we are talking about portability:

* You can easily check your message if you are in airport,at work or where you have no other option to check your work.

* When it is any emergency case then you can talk through your mail.

*Last but not the least is,you can easily be in contact with your colleagues when you are out of office.