Include the position title and the last day you intend to work. Sample Nonprofit Board Resignation Letter.Here's a sample resignation letter that includes all of the appropriate information: Dear Kathryn,. My resignation takes effect immediately. Name and position: State your full name and the exact board seat you're vacating. Write your board resignation letter with this free letter template. Easy to customize the design. I wish the board and the company continued success and offer my support in ensuring a smooth transition. Sincerely,. I have enjoyed all our moments together, and I hope that we will have a chance to cooperate in the future. It is my intention to complete all of the shifts scheduled for me during this period.