Apologies for providing wrong information

 1. Put your apology right in the subject line

“Oops! Something went wrong.”

“Did our last email confuse you? Let's provide some explanations.”

“Apologies for the mistake. ...

“We made a wrong move! ...

“Sorry for the mishap.”

“Please accept our warmest and most sincere apologies.”

“Oops! ...

“Here's what went wrong.