iDoneThis - iDoneThis The fun, easy way to get stuff done. Every day we’ll email your team to ask, “What’d you get done today?” Just reply to our email. The next day, everyone gets an email with the team's accomplishments

Letter to Yourself - Send a physical letter to your future self

Writing Streak - Write every day, skyrocket your productivity

Future Me - Send an email to your future self

Nikatime - A Slackbot that keeps track of what your team is doing so you don't have to.

Letter to my future self - Letter to my future self is a prominent email scheduling service that gives you the opportunity to create a letter with goals and thoughts for your future self and schedule a date for sending it.