Because newsletter templates are available in all variety of lengths and sizes, there is really no limit to the content that you could potentially write. Keep in mind, however, that you should probably keep down your word count to a level that people are comfortable reading. While you may think everything that you are spouting off is fascinating, it's helpful to first sit down and make an outline of what you want your main message to be, or what the major news is that you are trying to share.
The overall site navigation menus and use of text and graphics have to be very much limited in every business template. If you use too much text the visitors will feel lethargy to read. At the same time excessive graphics to make the site standout in the crowd is no use if the visitors do not get the clear idea about your website. The navigation menus have to be bold and attractive to the visitors. The overall site needs to be user_friendly.