Call to actionexpectation from the reader. City State Zip Code. Business Letter Format Letter Template Word Business Proposal Letter Apology letter for boss. Business letter format via mail . This letter is simply to notify you of the upcoming changes and no immediate action is required from you at this time. The body of the letter. Print it at the top line of the address block centered in the middle of the envelope a few lines below your information. Address of Company. How to Schedule a Meeting by Email. A professional mail must use one and simple text font. Title of Rep. Purpose of the email. Business Letter Format Sent via Email In todays world Microsoft Word format DOCX is the standard format for business letters. Sample business emails B2B and B2C. If you dont have a preprinted envelope on the first line put your name your companys name street address and zip code in the upper left corner. And the next line should be the address line. No ca...