Summarize:

When submitting your 2 weeks notice, you should write it as an actual typed and printed letter rather than an e-mail. This letter should be handed over to your boss in person.  While writing an e-mail may seem easier and quicker, it is generally considered less professional and will usually be frowned upon. Do not mail your 2 weeks notice through the postal system or through your office mail system. Doing so may cause a delay, and by the time your employer gets your notice, your 2 weeks may already be halfway finished. Per standard rules for writing a formal letter, you should type the date in month-day-year format in the upper left corner of the page. The month should be spelled out, but the day and year should be in numerical format.  Example: June 26, 2013 Note that you do not usually need to include a return address above the date since your address would be the same as your employer's address. You can, however, use company letterhead with the address on it if you choose to. If you are using company letterhead, you may opt to skip the inside recipient's address, as well, since this is a letter sent from within a single company. Including the address is a good idea, however, since it allows you to address the letter specifically to your boss.  Include your employer's personal title and full name on the first line. Write the street address on the following line and the city, state, and zip code on the line after that. Skip a line in between the date and the inside address. Skip another line in between the inside address and the salutation that follows it. The address itself should be single-spaced, though. Your letter should open with “Dear (boss's name).” Never use a vague or general salutation like “To Whom It May Concern.” Address your boss in the same way you usually do, even if that method is fairly casual. For instance, if you are on a first name basis with your boss, write “Dear Jennifer.” If you are only on a professional, last name basis with your boss, stick with “Dear Ms. Smith.” Skip a line after your salutation before you begin writing the body of your letter. Each body paragraph should be single-spaced, but there should be a blank line in between each separate paragraph. None of the paragraphs need to be indented. Keep your letter down to a single page at maximum. In order to maintain a friendly, positive tone, you need to offer a closing that seems a little warmer and more sincere than the usual “Regards,” “Thanks,” or “Sincerely.” A few examples of possible closings include:  Warmest possible regards Best wishes for your continued success Warmest thanks for everything through now With sincerest gratitude and warmest wishes Type your full name 4 lines below your closing and sign your name in between the closing and the typed name.
Write a letter, not an e-mail. Type the date in the upper left corner. Consider including an inside address. Address your employer directly in the salutation. Write the body of your notice. Use a warm closing. Type and sign your name.