一般的な挨拶
- I hope you are well.
- I hope you are doing well.
- I hope this e-mail finds you well. (フォーマル)
普段から頻繁に連絡しあう間柄
- I hope you are having a great day.
- I hope you are having a great week.
久しぶりの連絡に対して
- It's great to hear from you.
- What a nice surprise! （親しい間柄）
