The mailbox providers that use Cloudmark for spam filtering are listed in the table below. This list was gathered from research and is not an exhaustive list.
|
Mailbox provider |
Country |
|
Singtel/Optus Online |
Australia |
|
Telstra Corporation Ltd |
Australia |
|
Telenet Thuis |
Belgium |
|
Tiscali, Belgium |
Belgium |
|
UPC; Belgium, Telenet (telenet.be) |
Belgium |
|
Universo Online |
Brazil |
|
Terra |
Brazil |
|
Inova.net |
Brazil |
|
Shaw Cablesystems |
Canada |
|
TELUS / Mail Operations |
Canada |
|
21CN Company Limited (China Telecom) |
China |
|
Sohu.com Inc. |
China |
|
Tencent / QQ Mail Operations |
China |
|
TDC A/S |
Denmark |
|
TDC Hosting |
Denmark |
|
Atos Worldline |
France |
|
France Telecom / Orange France |
France |
|
Renater |
France |
|
Virgin Mobile France, Tele2 France, SA |
France |
|
domainfactory GmbH |
Germany |
|
intergenia AG |
Germany |
|
Vodafone; Arcor AG & Co. KG |
Germany |
|
IBM Outblaze (IBM Lotus Live) |
Hong Kong |
|
KMS |
Hong Kong |
|
PCCW-HKT Network Services Limited (Netvigator) |
Hong Kong |
|
Bharat Sanchar Nigam (BSNL) |
India |
|
eircom Group plc |
Ireland |
|
Aruba S.p.A. |
Italy |
|
Fastweb SpA |
Italy |
|
Libero Mail |
Italy |
|
Tiscali S.p.A. |
Italy |
|
@NetHome Co., Ltd. |
Japan |
|
DTI (dream.jp) |
Japan |
|
NEC Biglobe Ltd. |
Japan |
|
NTT Group; Goo |
Japan |
|
OCN (Open Computer Network) |
Japan |
|
Otsuka Corporation |
Japan |
|
Sony So-Net Entertainment Corp. (so-net.ne.jp) |
Japan |
|
Mexis S.A. de C.V. |
Mexico |
|
Koninklijke KPN N.V. |
Netherlands |
|
KPN / XS4ALL Internet B.V. |
Netherlands |
|
Liberty Global Europe BV |
Netherlands |
|
Telfort (worldonline.nl) |
Netherlands |
|
TDC / TeleDanmark Internordia |
Norway |
|
Telenor / Tiscali AS |
Norway |
|
Pakistan Telecommunication Company Ltd. (PTCL) |
Pakistan |
|
ZAO Comstar-Direct |
Russia |
|
Vodacom Group Ltd |
South Africa |
|
INT Espana |
Spain |
|
TeleCable de Asturias, S.A.U. |
Spain |
|
Tele2 AB |
Sweden |
|
Bluewin |
Switzerland |
|
green.ch AG |
Switzerland |
|
Swisscom AG |
Switzerland |
|
Antel |
Trinidad |
|
AMEN Limited |
United Kingdom |
|
British Sky Broadcasting Group plc |
United Kingdom |
|
Cable & Wireless; THUS Plc (demon.co.uk) |
United Kingdom |
|
Claranet Limited |
United Kingdom |
|
PlusNet plc |
United Kingdom |
|
Talk Internet Ltd |
United Kingdom |
|
Tesco Telecom |
United Kingdom |
|
The Carphone Warehouse Group |
United Kingdom |
|
Virgin Mobile Group (UK) Limited |
United Kingdom |
|
Vodafone Group PLC |
United Kingdom |
|
Webroot / Email Systems Limited |
United Kingdom |
|
Armstrong Cable Services |
United States |
|
Atlantic Broadband |
United States |
|
BendBroadband |
United States |
|
Blue Ridge Communications, Inc. |
United States |
|
BlueTie, Inc. |
United States |
|
Bright House Networks, LLC |
United States |
|
CenturyLink / Digital Teleport, Inc (DTI) |
United States |
|
Charter Communications, Inc. |
United States |
|
Consolidated Communications Holdings Inc |
United States |
|
Cox Communications / Mail Operations |
United States |
|
DirecTV Broadband, Inc. |
United States |
|
Endurance International |
United States |
|
Facebook, Inc. - English |
United States |
|
Fusemail, LLC (Cincinnati Bell) |
United States |
|
Grande Communications, Inc. |
United States |
|
GVTC Communications |
United States |
|
Hickory Tech Corporation |
United States |
|
Liberty Technology Solutions |
United States |
|
Massillon Cable TV, Inc. |
United States |
|
Mediacom / Mail Operations |
United States |
|
Midcontinent Communications |
United States |
|
Rackspace Mail Operations (formerly MailTrust) |
United States |
|
Ritter Communications |
United States |
|
Southern Star Inc |
United States |
|
SureWest Communications |
United States |
|
TDS Telecom |
United States |
|
Time Warner Cable (Road Runner) |
United States |
|
TruVista Communications |
United States |
|
TWC Insight Communications |
United States |
|
Universal Cable Holdings, Inc. (DBA Suddenlink) |
United States |
|
Verizon Online / Mail Operations |
United States |
|
Windstream Communications (formerly Alltel) |
United States |
|
Wow! Technologies, Inc. |
United States |
|
XO Communications (xo.net) |
United States |
