How do you say thank for getting my mail in French?

Here are a few ways to say "thank you for getting my mail" in French, depending on the context:

Formal:

* Merci de m'avoir remis mon courrier. (Thank you for delivering my mail.)

* Je vous remercie d'avoir récupéré mon courrier. (I thank you for getting my mail.)

Informal:

* Merci d'avoir récupéré mon courrier ! (Thanks for getting my mail!)

* Merci beaucoup d'avoir pris soin de mon courrier. (Thank you very much for taking care of my mail.)

If you are talking to someone who specifically went out of their way to get your mail:

* Merci beaucoup pour votre gentillesse ! (Thank you very much for your kindness!)

* C'est vraiment gentil de votre part. (That's really kind of you.)

You can also add a sentence about how you appreciate their help:

* Je vous suis très reconnaissant. (I'm very grateful to you.)

* J'apprécie vraiment votre aide. (I really appreciate your help.)

Remember to choose the appropriate level of formality based on your relationship with the person you are speaking to.