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What is the appropriate salutation and complimentary closing to use when you write a letter to a US senator?
According to ...
http://www.svls.lib.ca.us/SVLS/html/lawmakers/correct_form.html
...
the answer is
The Honorable Firstname Surname
Dear Senator Surname,
Sincerely yours,
In the upper left side of the email/letter you would write: The Honorable John (or Jane) Smith, and beneath that is where you would put their address. The salutation should be "Dear Senator Smith",...
In fact there is no strict etiquette about these email endings in French. Informally French people use " A + " (meaning 'see you') to end their mails to friends. They can also use "amitiés" or...