"싸가지 없는 영어 Email" is an educational and reference app available on the iPhone App Store and now on Google Play Store. Developed by Rinasoft Inc., this app offers a unique opportunity to learn authentic English and improve English writing skills through email composition. It is based on the experiences of '싸가지' who has worked in major North American companies, providing insights into writing natural English emails.

Whether you struggle with communicating in English on international online shopping platforms, exchanging emails with foreign colleagues, or feeling hesitant to send emails due to language barriers, this app aims to boost your confidence in writing and understanding English emails. It emphasizes shedding formalities and embracing a more casual, conversational tone in English correspondence.