When considering the cost of roofing materials, many people take into account just the shingle prices. This is incorrect, as a roof made just of roofing shingles will not work. You also need to consider all the accessories that are included in a complete roof system.
The differences between emails and letters is that, emails are send electronically and arrives faster to the person that you are sending it too, while in the other hand letters takes a little bit longer to arrives to the person and can be lost from the mailing company especially whens sending it overseas also it cost money.
A: While personal letters typically begin with a simple greeting, business or formal letter begin with a collection of information that includes the date, the sender's name and address, possibly the company the sender works for and a formal greeting. All of these should be aligned to the left side of the page.