Hello guys! Im starting a new business and it involves mailing my customers products they buy. Now i wanted to ask if i had to mail 500 - 1000 people monthly a very light package, prolly weighs less than 5 - 10 ounces. Is there a way i can send mail for like below $1? There will be like 500 - 1000 addresses.. If someone can help me solve this problem that would be great! THANKS GUYS!