Dear ABC,
i hope this letter finds you and your family in pink. I wrote this letter so that i can also make you to join the swach bharat mission.As you swachh bharat mission had been started by pm modi he too is participating in making India a better place to leave in.So it is now our responsibility too to make India beautiful by cleaning our home first , then our society and next our city. You can too do this by spending at least half an hour in cleaning your society on at least Saturdays and Sundays.If you do so i will be too glad to hear that.If you are really touched by the mission than you can even make a group in society whose responsibility will be to clean the society once or twice in each week.I myself had too made a group like that here. 
I will wait for your answer.Stay safe and sound with a pollution free India.

yours friendly
Hi, friend how are you? I just wanted to tell you that we all should participate in swachh bharat abhiyan . We also being as an responsible citizen we all should participate in this program. And also we all should create awareness among others to keep our city and environment clean and how important it is to clean the environment. Hope you understood about this program. And convey my regards to aunty and uncle.