I can’t remember the last time I wrote or received a personal letter. I suspect that, sadly, I am not the only one. 
Business letters, on the other hand, are still sent and received fairly often. Writers often worry over which ending to use with which greeting. Many of the more formal closings are simply no longer used – Your most obedient servant in particular.
If you begin the letter with Dear Mr Smith, Dear John Smith, or Dear John, then you should end with Yours sincerely. If you use the first name only and know the person well, you could use With kind regards, Best wishes, or a variant of these. The choice that you make should reflect the level of formality the letter requires.
If you begin the letter with Dear Madam, Dear Sir, or Dear Sir or Madam, you should end with Yours faithfully. Yours truly is a less formal alternative.
Hannah McCall 
If you want to pass an International exam such as FC, TOEFL or CAE you´d rather know how to write letters in the proper way! Great post! … Best wishes (Yours, sincerely!:) ) Aquileana
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Thank you! 🙂
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Dear Hannah,
Thanks for this. Love the content.
Yours truly,
DJ Morand
Like that?
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Dear DJ,
Thank you!
Yours sincerely,
Hannah
Yours truly if you had addressed me as Madam (which would be weird).
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I see! I have never done well with letters in general. Seriously though, thank you!
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Love letters! Wish I could use ‘yours sincerely / faithfully’ more often
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Yes, there is something special about a letter, isn’t there?
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