You could use (examples)
Thanks,
(name)
See you Monday (or fitting date),
(name)
Talk to you soon,
(name)
Peace out homes,
(name)
The appropriate format for a formal letter includes the sender's address, date, recipient's address, salutation, body paragraphs, closing, and signature.
"from an admirer"
It is useful when you don't have a contact name (sender's name) because it doesn't require an opening (or closing) salutation. There is no opening salutation or complimentary closing, and nothing is indented.
the answer is A. Salutation
The appropriate salutation to use when requesting a letter of recommendation is "Dear Recipient's Name."
Note
deepest regards
The appropriate salutation depends on whether you also are a solicitor in your own country. If you are a female attorney too, then the appropriate salutation is "Chère Consoeur". However most French lawyers use the "Cher Confrère" salutation regardless of the gender of their interlocutor. If you are a man, you can write "Cher Confrère". If you are not an attorney, then the appropriate salutation always is 'Cher Maitre' or simply "Maître".
The complimentary closing should go at the end of the letter in an informal letter.
Using a colon in the salutation and a comma in closing.
comma
The most appropriate salutation to use in an email signature is "Sincerely," or "Best regards," followed by your name.