1、Introduction：

2、Hello!/Dear[Name],

3、Ihopethisletter/emailreachesyouingoodhealthandspirits.

4、Iamwritingtoyoutodayto...

5、Iamwritingtoinquireabout...

6、Reasonforwriting：

7、Iamwritingtoinformyouthat...

8、Iamwritingtorequest...

9、Iamwritingtoexpressmyconcernabout...

10、Iamwritingtofollowupon...

11、Expressinggratitude：

12、Iwouldliketothankyoufor...

13、Iamextremelygratefulfor...

14、Yourhelp/supporthaxxeeninvaluable.

15、IcannotexpresshowmuchIappreciate...

16、Apology：

17、Iamwritingtoapologizefor...

18、Iwouldliketoexpressmysincereapologiesfor...

19、Iamsorryforanyinconvenience/issueImayhavecaused.

20、Pleaseacceptmyapologiesfor...

21、Offeringassistance：

22、IfthereisanythingIcandotohelp,pleasedon'thesitatetoask.

23、Ifyouneedanyassistance,pleaseletmeknow.

24、Iamhappy/willingtohelpinanywayIcan.

25、Pleasedon'thesitatetocontactmeifyouneedanything.

26、Closingtheletter/email：

27、Thankyoufortakingthetimetoread/considermyletter.

28、Thankyouinadvanceforyourattentiontothismatter.

29、Bestregards,

30、Sincerely,

31、Yourstruly,

32、Closingremarks：

33、Pleasekeepintouch.

34、Lookingforwardtohearingfromyousoon.

35、Wishingyouallthebest.

36、Takecare.