I've created a simple bot that posts memes in our chats/channels and '1337' every day at 13:37. The teams API is incredibly bad and illogical in most places. You just can't make a Slack-like bot for Teams, because of how limited everything is. Not mentioning breaking changes in their SDKs(like literally recently message .Text started putting some weird random bytes in front of actual message that broke all regexes for us), 3 different types of conversations that you handle differently and an overly complicated way of adding bots to your teams/conversations. Add to that and incredibly slow Electron app with bad UX, typing lag and around 2gb constant ram usage and here you go, worst chat application I've ever used.