i sign off on emails to vendors & publishers with the valediction, “kind regards,” and then type my name. i used to use “sincerely,” but that didn’t seem quite right for professional communication. i considered the simple, “regards,” but that seemed a little too something-or-other. “cheers” is a bit too friendly. “thanks!” is awkward for the kind of correspondence i do (suggesting changes to licensing terms and other problem-solving). i ended up with “kind regards,” which seems just right.
how do you sign off your professional correspondence?