Letter writing is important prose sort of Urdu literature. It has long been an important source of biographical information, a powerful tool to understand the personality of the writer and shows the historical importance of that very era. That’s why letters of great writers and poets have acquired prime importance in Urdu letter writing history. Letters reveal the personal and private life of writers and have great literary importance as they are important source of getting first-hand knowledge of writer’s personal and private life and the era which he represents. Letters from important historical figures like Shibli, Ghalib,Allama Iqbal etc can shed light on what they were thinking, what was happening in their lives when they were making history and the importance of era in which they were living.Letter writing has social value too and the letters of scholars, critics, poets, religious scholars, thinkers and intellectuals have great place in Urdu literary history.