YWIA

People send YWIA (you're welcome in advance) when they expect you'll be satisfied with their efforts. For example, a friend who recommends a movie they think you'll love might end their message with YWIA.

There are a few different ways to quickly thank someone who sent you YWIA (provided you want to). TIA tells the person you also expect their efforts will prove satisfactory, while TFTI and thx are more neutral.