Is there a possibility to redirect a user to the default mail application on the push tap
Yes, it is possible. You can add the mailto: links to the message in the Action tab -> URL while creating a message.
You can specify the address to send an email, the subject and the body of the message. Please see the example below:
It is also possible to send the same link via the Remote API. Simply specify it in the "link" parameter of the /createMessage request: