- I am overwhelmed ! - I don't know what to say . - I appraciate it . - I am very grateful - How I can ever repay u! - Thanks ever so much. - Thanks alot . -cheers. - Thanks a bundle / a million ,...etc

many thanks~~You r really helpful

Thanks for your support. cowboy....

You can say a lot of things. The simplest things you can say are: "Thanks a lot!" "Thank you so much." "Thank you very much." "Thanks, you're an amazing person for helping me out!" "Thanks, you're a great friend." If it's a friend of yours, you can say something more casual like: "Thanks, you're awesome!" For something really extreme, you can say: "You've done so much for me, I don't even know how to thank you." And if you're willing to return the favor: "Hey, thanks a lot for helping me out! You know I'll do the same for you." Or "Thanks so much, if you never need any help, just ask." There are a lot of variations. Everything srgause said is good too =)

"I am so grateful!" "Thank you very much" "You don't know how much you've helped me" "You're a life-saver" Those are just a few ways to express gratitude