❌ I would like to express my sincere gratitude and thanks to you for your kind assistance and support.
✅ Thank you so much for your help.
감사 인사를 형식적이고 과하게 길게 표현하는 한국식 경향이 있으나, 직장 영어에서는 단순하고 따뜻한 한 마디가 훨씬 효과적입니다.
잘못된 예: Hi Sarah, I would like to express my sincere gratitude and thanks to you for your kind assistance and support with the project.
올바른 예: Hi Sarah, thank you so much for your help with the project; I really couldn't have finished it without you.