Letters can be broadly divided into two major categories – (i) Formal letters, and (ii) Informal letters. We use proper format according to our needs or to whom we are to write.

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Here are some letters written to officials and close ones:

1. To Editor – Write a letter to the editor of an English Newspaper on the miserable conditions of animals in zoos
2. To Editor – Write a letter to the editor of an English Newspaper about the excessive number of buildings shortening our nature
3. To Editor – Write a letter to the editor of an English Newspaper on the use of animals in scientific research
4. To Editor – Write a letter to the editor of an English Newspaper on excessive expenses incurred at sports events held in India
5. To Friend – Write a letter to a friend living abroad telling him about the new initiative taken by you on planting trees
6. To Editor – Write a letter to the editor of an English Newspaper about eve teasing on girls by local men
7. To the President – Write a letter to the President about rising intolerance in society
8. To Editor – Write a letter to the editor of an English Newspaper about mental illness due to lockdown in Covid
9. To Editor – Write a letter to the editor of an English Newspaper on Paid Media in India
10. To Police – Write a letter to the local police against losing an expensive gift that your friend received on her last birthday
11. To Friend – Write a letter to the friend whose latest birthday expensive gift you misplaced
12. To Friend – Write a letter to your friend telling them not be able to attend their marriage ceremony due to some prior commitment
13. To Editor – Write a letter to the editor of an English Newspaper on whether children should participate the reality shows
14. To Chairman – Write a letter to the chairman of the state transport corporation expressing your views on the sudden collapse of public vehicles post lockdown
15. To Grandfather – Write a letter to your grandfather, a retired teacher, discussing the difficulties you are facing in online education
16. To retailer – You purchased a mobile phone from a reputed company in Kolkata. Since the phone is not working properly, write an e-mail to the company asking for its replacement immediately
17. To Editor – Write a letter to the editor of an English Newspaper about child trafficking
18. To Editor – Write a letter to the editor of an English Newspaper about violating your deep concern over the use of harmful chemicals in vegetables and fruits
19. To Editor – Write a letter to the editor of an English Newspaper about the effects of urbanisation
20. To Brother – Write a letter to your brother who lives in another state asking him to use a helmet whenever he rides on a bike
21. To Friend – Write a letter to a friend about banning plastic bags 
22. To Friend – Invite a friend who is in another state