1. I hope you had a good weekend.
2. I hope you had a great trip.
3. Hope you had a nice break.
4. I hope you are well.
5. I hope all is well.
6. Hope you're enjoying your holiday.
7. I hope this email finds you well.
8. I hope you enjoyed the event.
9. I'm glad we had a chance to chat at the convention.
10. It was great to see you on Thursday.
11. It was a pleasure to meet you yesterday.
12. Hope you are doing great.
13. How have you been?
14. How are you?
15. Thank you for the good news.
16. I hope you're having a great Monday.