Thanks a million – A strong and cheerful way to say “thank you very much.”

Much appreciated – A formal way to express deep gratitude.

I'm grateful – Sincere and emotional; good for heartfelt moments.

I can't thank you enough – Used when you feel ordinary thanks aren’t sufficient.

You're a lifesaver – Informal; used when someone really helped you out of a tough situation.

I owe you one – A casual way to say you'll return the favor in the future.

Many thanks – Polite and slightly formal.

It means a lot to me – Adds emotional value to your thanks.

I'm indebted to you – Very formal and serious; implies a deep level of gratitude.

Words can't express my thanks – Used when you're overwhelmed with appreciation.

You're too kind – A humble response when someone compliments or helps you.

I'm so thankful for... – Personal and expressive.

You've been a great help – Direct and appreciative.

Thank you from the bottom of my heart – Very emotional and sincere.

Your help has been invaluable – Used when someone’s help has been extremely important and meaningful.