1. Formal Letter: These are used for official communication, often with a structured format (e.g., business letters, cover letters, complaint letters). They are usually written in a formal tone and follow specific conventions.
2. Informal Letter: These are written to friends and family and are more relaxed in tone. They can cover a wide range of topics and are often personal in nature.
3. Business Letter: A specific type of formal letter used for communication between businesses and individuals, or between businesses themselves. They focus on specific topics like orders, invoices, complaints, etc.
4. Love Letter: A personal and often passionate letter expressing deep affection for another person. They are written in a romantic and heartfelt style.
5. Thank-You Letter: A letter expressing gratitude for a gift, favor, or kind act. They are often brief and sincere.
These are just a few examples. You can find many other types of letters based on their purpose and style!