Feedback for the OP: I didn't understand how this works, and am reluctant to start a bot just to figure it out. It would be helpful if you could add some screenshots showing how email address creation, deletion and email receipt work (please do not use GIFs, just a set of static images are enough).

Tangentially on Telegram bots, one of the things I dislike with privacy on Telegram is that the user ID (an internal Telegram generated number, not to be confused with your chosen username) given to bots is static. It's not an ID per bot and there's no way to change the ID without deleting your Telegram account and creating it again later (I'm not sure if it changes then either). Bots can also see and save your name (as entered on the profile) on Telegram. This makes it easier for bots (or bot swarms) to track users on Telegram. (AFAIK, Telegram bots don't get the phone number of the user; it'd be terrible if they did).