When should I mail my "thank you for voting" letters?

The “thank you for voting” campaigns have a rolling mail date, so you can drop your letters in the mail anytime between now and April 15th, which is when the campaigns are set to end on the website. Once you’ve mailed your letters, please be sure to log in and mark them “sent” on your dashboard, so we know our records are accurate for this Labs experiment. If you need a refresher, here’s how to mark your letters “sent”.