A good application that it will be able to use different format of formal letters and send them by email. Also allows the user to use a menu with four different topics such as formal letter, rules of formal letters, content of formal letters with example, abbreviations, and informal letters.
9Apps 4.9
![국세청 홈택스 [손택스] on 9Apps](https://go.getnew.app/sg/res/jpg/f7/df/69cc2f90120ec331db2630e0f5b6-6dh.jpg?x-oss-process=style/jmq200)
