Is dubler.com Safe for Email?

domain name: dubler.com
registry domain id: 1931760_domain_com-vrsn
registrar whois server: whois.psi-usa.info
registrar url: https://www.psi-usa.info
updated date: 2023-10-27t11:32:23z
creation date: 1998-09-08t04:00:00z
registrar registration expiration date: 2024-09-06t22:00:00z
registrar: psi-usa, inc. dba domain robot
registrar iana id: 151
registrar abuse contact email: [email protected]
registrar abuse contact phone: +49.94159559482
domain status: clienttransferprohibited https://www.icann.org/epp#clienttransferprohibited
registry registrant id: redacted for privacy
registrant name: redacted for privacy
registrant organization: 
registrant street: redacted for privacy
registrant city: redacted for privacy
registrant state/province: n.a.
registrant postal code: redacted for privacy
registrant country: ch
registrant phone: redacted for privacy
registrant phone ext: redacted for privacy
registrant fax: redacted for privacy
registrant fax ext: redacted for privacy
registrant email: https://whoispro.domain-robot.org/whois/dubler.com 
registry admin id: redacted for privacy
admin name: redacted for privacy
admin organization: redacted for privacy
admin street: redacted for privacy
admin city: redacted for privacy
admin state/province: redacted for privacy
admin postal code: redacted for privacy
admin country: redacted for privacy
admin phone: redacted for privacy
admin phone ext: redacted for privacy
admin fax: redacted for privacy
admin fax ext: redacted for privacy
admin email: https://whoispro.domain-robot.org/whois/dubler.com
registry tech id: redacted for privacy
tech name: redacted for privacy
tech organization: redacted for privacy
tech street: redacted for privacy
tech city: redacted for privacy
tech state/province: redacted for privacy
tech postal code: redacted for privacy
tech country: redacted for privacy
tech phone: redacted for privacy
tech phone ext: redacted for privacy
tech fax: redacted for privacy
tech fax ext: redacted for privacy
tech email: https://whoispro.domain-robot.org/whois/dubler.com
name server: ns3.tophost.ch
name server: ns4.tophost.ch
dnssec: unsigned
url of the icann whois data problem reporting system: https://wdprs.internic.net/
>>> last update of whois database: 2024-05-03t12:16:04z <<<

for more information on whois status codes, please visit https://www.icann.org/epp


# terms and conditions:
#
# the data in the whois database of psi-usa, inc. is provided by
# psi-usa, inc. for information purposes, and to assist persons in
# obtaining information about or related to a domain name registration
# record.  psi-usa, inc. does not guarantee its accuracy.  by submitting
# a whois query, you agree that you will use this data only for lawful
# purposes and that, under no circumstances, you will use this data to
#  (1) allow, enable, or otherwise support the transmission of mass
#      unsolicited, commercial advertising or solicitations via e-mail
#      (spam); or
#  (2) enable high volume, automated, electronic processes that apply to
#      psi-usa, inc. or its systems.
# psi-usa, inc. reserves the right to modify these terms at any time.
# by submitting this query, you agree to abide by this policy.
#