PCCW Broadband (Business)
Custome Hotline: 10088
Contact List: http://www.pccw.com/contact/index.page?locale=zh#%E5%95%86%E6%A5%AD%E5%AE%A2%E6%88%B6
Pop3: corppop.netvigator.com (Port 110)
SMTP: corpmail1.netvigator.com (Port 25)
SMTP: smtp.netvigator.com (Port 25, Required Authentication)
HGC Broadband (Home)
Website: https://www.hgcbroadband.com/tc/support/support/technical-support/broadband-service
Customer and Support Hotline: 1223
Pop3: pop.hgcbroadband.com
SMTP: mail02.hgcbroadband.com
HGC Broadband (Business)
Website: https://www.hgcbiz.com/zh/contact-us
Customer Hotline: 122
Support and Fault Hotline: 3160-3160
HKBN Broadband (bbmail.com.hk)
Customer Hotline: 128-180
24-Hrs Emergency Repair and Technical Hotline: 3999-3666
Webmail: https://www.bbmail.com.hk/
Pop: pop3.bbmail.com.hk (Port 110)
Imap: Seem no IMAP support (Not Sure)
Smtp: smtp.bbmail.com.hk (Port 25, required auth)
Wharf & HKBN Broadband
Hotline: 128180
Smtp: smtp.mail.hkbnes.net (Starting on Sep-2020)
Retired SMTP
Smtp: smtp2.wtt-mail.com (invalid on 1-Jun-2021)
Smtp: smtp.wtt-mail.com (invalid on May-2021)
Outlook Setting
Pop/Imap: outlook.office365.com
SMTP: smtp.office365.com
Pop: 995 TLS
Imap: 993 TLS
SMTP: 587 STARTTLS
ICDSoft
Pop/Smtp/Imap : mail.<server name>
Pop: 995 SSL
Imap: 993 SSL
SMTP: 587 TLS