Yes, freemailus.com can receive emails.
No, freemailus.com 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
162.215.226.3
MX records
us2.mx1.mailhostbox.com
208.91.199.205
us2.mx2.mailhostbox.com
208.91.199.202
us2.mx3.mailhostbox.com
208.91.199.226