Sorry, at the moment the program does not have a default email address.
However I do have a suggestion.
If you have a lot of alarms to set up why not set up an alarm with a 'next alarm date' as say, 31/12/2700?
That way the alarm will never be executed, but you have the advantage of being able to use it as a template.
Just right click on the alarm, select copy, and simply change the next alarm date on the new alarm.
I reckon that will save you heaps of keystrokes.