Gmail Search Tips

In the current situation where various email services are emerging one after another, Gmail can indeed be considered one of the best among them. It has strong support for extension plugins, convenient and practical labels, secure transmission, super-large storage space, and a perfect combination with GTALK, etc. What interests me most is its anti-spam function; its intelligent spam barrier function is impressive! Perhaps you, like me, have made it your primary email service, but do you know how to use Gmail's search function? If you're not quite sure, please follow me.