Yes, 50hands.org can receive emails.
Yes, 50hands.org seems to be a legitimate domain.
A record
141.136.41.153
MX records
alt1.aspmx.l.google.com
64.233.186.26
alt2.aspmx.l.google.com
209.85.202.26
alt3.aspmx.l.google.com
64.233.184.27
alt4.aspmx.l.google.com
142.250.153.26
aspmx.l.google.com
173.194.206.27
mx1.flockmail.com
3.229.42.43
mx2.flockmail.com
3.229.42.43