What is kindest regards?

"Kindest regards" is a phrase commonly used at the end of professional or formal written correspondence, such as emails, letters, or notes. It is a polite and friendly way of ending a message, typically indicating that the sender has a high level of regard or respect for the recipient. "Kindest" suggests that the sender's regards are especially warm and sincere, and the word "regards" is often used in lieu of more formal closings like "sincerely" or "yours truly." It is a way to convey politeness, gratitude, and respect, and is often seen as a professional way of signing off in business correspondences or in other formal settings.