How do you say "I appreciate or I'm grateful" in Portuguese language?

Question

How do you say "I appreciate or I'm grateful"  in Portuguese language?

Answer

Hi!You can say : fico-lhe muito agradecido or fico-lhe grato.
hope it helps!

Answer

Agradeceria...

Ficaria agradecido.

Grato (a) (in writing).

These are the closest expressions for that in Brazil. We could translate these expressions literally but would not mean the same,  and would sound awkward.

Muito obrigado is the most common expression and you can say 'valeu' in an informal setting.

Answer

eu apreciei ...
eu apreciei muito ...
sou grato ...
sou muito grato ...

Answer

I'm grateful: "Muito obrigado".