Yes, hopto.org can receive emails.
No, hopto.org is a throwaway domain and should be blocked.
You can use MailCheck's free API to automatically block throwaway emails. Read our documentation to get started. No registration required.
A record
8.23.224.108
MX records
mail1.no-ip.com
8.23.224.50
mail2.no-ip.com
69.65.5.119