初次开场白: It is my pleasure to write here for you
回复开场白: Further to our conversation earlier,
As discussed over the phone,
Thanks for you kind reply
Thank you for your inquiry/email
Thanks for your letter
It is my pleasure to receive your reply
Thanks for your mail of 日期
结尾: We will noted and many thanks
I hope everything with you is fine
Many thanks for your support
I hope you are well and in good health
FYI: for your information 仅供参考 深盼贵公司及早回复 (1) We hope to receive your favors at early date
(2) We hope to be favored with a reply with the least delay
(3) We await good news with patience
(4) We hope to receive a favorable reply per return mail
(5) We await the favor of your early (prompt) reply
(6) A prompt reply would greatly oblige us
(7) We tru