Hi @Hemant75254,

So that I am understanding your problem correctly, you invitees are signing up for meetings with fraudulent emails? Unfortunately, there is no way to book a meeting through Calendly without a valid email. Calendly is a tool that sits on top of and schedules through a digital calendar. Those calendar all require an email. While, Calendly doesn’t have an email verification function, you can require phone number which may help with communication.We take security very seriously and if you are receiving spam meetings or any other types of malicious activity via Calendly please reach out to us at security@calendly.com or to our Customer Support team so that we can identify the bad actors.