邮件开头礼貌用语

Nice day!

Have a good day!

Have a nice day!

Haven't contact you for a long time !Hope everything is ok at your side!

How are you ?

How are  you  ?Long  time  no  see!"

Wish you a good day!

Sorry to bother u (again)!

Today is good day ,i hope you have a good mood!

Hope you are fine (and doing well in your location .)

Hope everything around you is fine!