One, two tops. You want it short and to the point. Best is about 3-4 paragraphs.
Loitering with Intent has 224 pages.
A letter of intent to sell a house should be brief but list a honest reason. In many cases this type of letter is not required.
The Letter of Marque has 284 pages.
Letter from Peking has 252 pages.
The Crooked Letter has 640 pages.
5 pages-102 pages
90
A business letter should be concise and to the point; there is seldom a need for a business letter to be two pages. When there is too much wording to a business letter, the point of the letter can be unclear or camouflaged. A sales letter, a resume cover letter (which is a sales letter), a product, a pricing, or contract inquiry or request, etc. that have many specifications to include should have those specifications or product information on an attachment to the letter, such as the resume, a product or contract specification sheet and with only highlights of the attachment(s) included in the body of a letter. A business letter that is word dense is much less effective than a letter containing just enough to direct the mind of the recipient to the result that is the intent of the letter.
the book dead letter has 147 pages
The Vivero Letter - novel - has 290 pages.
The Last Letter Home has 311 pages.
Letter to a Christian Nation has 96 pages.