• Thank you
• Thanks
• Thank you very much
• Thanks a lot
• Thanks so much
• I really appreciate it
• I'm grateful
• I'm thankful

There are also many other phrases that can be used to express gratitude or appreciation, such as "I owe you one," "I can't thank you enough," and "Your kindness is greatly appreciated." Different languages also have their own ways of expressing gratitude, and there are many cultural variations in the way that thanks is expressed around the world.