Hi, I have seen English natives, especially British, write "My apologies for the delay" in their e-mails (as a first line.) I would like to know what nuance this sentence conveys. I have heard that "I apologize for the delay" is more formal than "I am sorry for the delay." What is the difference between these two phrases and "My apologies for the delay"? To what kind of recipient do you use this phrase? Thank you for your help!