Future Me - Send an email to your future self
Votum for Slack - Crowdsourced lists with upvotes, inside Slack
Letter to Yourself - Send a physical letter to your future self
Must-Read for Slack - Build controllable must-read lists for your team in Slack.
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.
Corpus - Curate, take notes and share your reading list