TempMail Hub
@tempmail_hub_botTemporary email inside Telegram: create a disposable address and get emails and confirmation codes right in the chat. No sign-up, inbox lives up to 7 days. Same inbox is also available on the web at tempmailhub.net.
Use my bot to connect your webapp or software to Telegram and let users log in with their Telegram accounts. Developers, look at https://github.com/Brom2/xauthbot to see how to integrate into your software.
— the badge on the card, faster publishing and a warning if the link stops working. How confirmation works