My dad sent me a letter from Massachusetts on Wednesday when should I receive it.
To know the estimated time that the letter will take you will have to contact the postal company. The reason is because it is determined by which carrier he used, distance and the type service used.
It really depends on where you live.
From the name "Fortin", I will assume you are in France and I would expect you should have it by Friday.
I don't know call him and ask