What is very sweet of you meaning?

"Very sweet of you" is an expression commonly used to express gratitude or appreciation towards someone who has done something kind, thoughtful, or generous. It typically implies that the person's actions were unexpected, but appreciated. The phrase is often used in everyday conversations, as well as in formal settings such as business correspondence and professional interactions. Overall, it's a way to express gratitude and admiration for someone's kindness or generosity.