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.
Calculate the result of basic mathematical expressions. Works as inline bot, and respons to /calc and /calk commands
— the badge on the card, faster publishing and a warning if the link stops working. How confirmation works