Write "letters" in Bento

Create a form using the Printing theme (it's a very plain theme, with no background or lines). Place whatever fields are usual in a letter. I use the Date Created and the Main Note fields. You can then print out the "letter" and send it either on paper or as a PDF. You can create text fields for a letterhead and a signature line if you like.

What's the advantage? The letter becomes part of your database. No need to change applications or attach a document to the database entry.