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.
Answer   You write your letter as usual, then mail it Certified, at a US Post Office.   Be certain, though, as you would for any business or legal matter, that your â¦ letter contains the name and address of both yourself and recipient, and is dated. A certified letter should be written just as any other business letter, but you should note above the name and address of the person to whom it is addressed Sent Certif â¦ ied Mail, Article No. *********** The Article Number should correspond to the Certified Mail Receipt form (PS Form 3800) from the USPS.