English words expressing gratitude

I am very grateful.

I really appreciate it.

I will always be grateful to you.

Thank you forever.

I really appreciate it．

Thank you very much.

I am grateful to you.

Thank you.

Words cannot express my gratitude.

Words are not enough to express my gratitude to you.

Thank you for everything.

Thank you for everything.

I really appreciate it．

Thank you very much.

Please accept my most sincere thanks.

Please accept my heartfelt thanks.

I sincerely thank you.

Thank you very much.

Thank you for taking the time to think of me.

Thank you for thinking of me.