what is a persuasive letter?

Answer 1

a letter that gets someone to beleive in what u beleive in and getting them to go on ur side

Answer 2

John's response is essentially right, it is a letter in which you try to influence others to do something that you want them to do. However, here is some additional information.

http://www.members.cox.net/dagershaw/lol/InfluenceAntecedents.html
http://www.members.cox.net/dagershaw/lol/InfluenceMorePrinciples.html
http://www.members.cox.net/dagershaw/lol/InfluenceStillMore.html
http://www.members.cox.net/dagershaw/lol/Persuasion.html
http://www.members.cox.net/dagershaw/lol/QuestionFrame.html

I hope this helps a little more. Thanks for asking.