'You all' I think is fine and usual as you have used it. In Southern drawl, it can refer to a single listener! I'd use 'confirm receipt' in a business letter.

Ok. here are some points : ' I would like to acknowledge you', 'for opening me a major door', ' towards expertise either in work or living' , 'I appreciate ur acqauantanceship' , ,,,,, and some ideas from u

Dear All, I am writing a resignation letter. at the end, I would like to thank my employer and the team... what would it be? Thanks.

In a formal business letter, how do you address a married woman if you do not know her husband's name? Mrs.?? Thanks.

Hi, First, please tell us the different tyoes. Best wishes, Clive

Please i got the different types of business letters but i need each one to be explained in detail,thank you

Some people use 'much love' to end anything short of a business letter.

Is it appropriate to use the closing "Best regards" in a business letter?

what is the proper way to sign a business letter for someone else?

Why do we need to write a business letters and what types of business letters do we need to write?