Respuesta :
An address of your house
A date of when you wrote it
Dear Sir/Madam
From or Yours Sincerely
Paragraphs
First Person
It can be past, present or future tense
It can be formal or informal
I would say that if it is a formal way f writing, and a great source of how to present it, I would say that..
You can write an email with a letter to a president, of course, that is rare, but that can happen, so.
If it is written in a good way, and same way as in paper, that should work.
Hope that this helps you..