How scheduling Mastodon posts works
On Mastodon, everyone belongs to a server of their choosing. Tesselith connects to whichever server you're on and publishes posts with up to four images, plus threads of replies that stay connected.
Connect Mastodon through its official sign-in, never your password. Write your post in the composer, tailor it for Mastodon if you like, attach media, and pick a time. Tesselith queues it and publishes at the moment you chose, then reports back so you always know it landed.