Vous remerciant de votre aide, je vous prie d'agréer, (Monsieur/Madame/Mademoiselle) l'expression de mes salutations distinguées.
(signature)
Using both 'Thank You' and 'Regards' in the conclusion and closure of a letter would be unusual. 'Thank You' and 'Regards' are both used in less formal letters, with 'Regards' being slightly more formal, and somewhat dated.
Thank you is "merci" in French.
Merci means thank you in French.
The word "thank you" in French Canadian is spelled "merci".
Thank you in French is Merci. How are you in French is Ça va? or Comment ça va?. Thank you and how are you in French is Merci et ça va?.
No.
...thank you.
Well, you use thank you either if it's a formal letter (and in any part of it) or not while you normally use best regards at the end of a formal letter
"Non merci" is the way of saying 'no thank you' in French.
Thank you is 'Merci' in French
Thank you Ma'am is 'merci madame' in French.
Thank you is spelled 'merci' (pronounced mer sea) in French. Thank you very much is 'merci beaucoup' (mer-sea bow-coo).