A
123 Together
Abaca
Accellion, Inc.
Adomo, Inc.
ADP, Inc.
Akonix Systems, Inc.
Alcatel USA
Alcoa, Inc.
Alt-N
America Online, Inc.
AmeriVault Corporation
Amika Mobile
AppRiver
Appsonic
Apptix ASA
ArcMail Technology (formerly WaLa Systems, Inc.)
Arvato Systems GmbH
AttachSTOR, Inc.
Avaya, Inc.
Avinti, Inc.
AXS-One, Inc.
Azaleos Corporation

B
Bain & Company
Banter Systems, Inc.
Barracuda Networks
BE&K Engineering Company
BlackSpider Technologies Ltd.
BOCES Southern Westchester
Boeing Company
BorderWare Technologies, Inc.
Brightmail, Inc.
BT Syntegra

C
C2C Systems Limited
Canadian Imperial Bank of Commerce
Captaris, Inc.
Cemaphore Systems
Certeon
CertifiedMail,com, Inc.
Citrix Systems, Inc.
City of Seattle
ClearStory Systems
Clearwell Systems, Inc.
Cloudmark
CMS Watch
Cobweb Solutions
Code Green Networks
Colligo Networks, Inc.
Commtouch Software Ltd.
CommVault, Inc.
Concentric
Concept G LLC
Connected Corporation
Convergence Limited
Cordant, Inc.
Cox Communications
Crosslink Capital
CYA Technologies, Inc.

D
DigiPortal Software, Inc.
Diversinet Corporation

E
Educom TS, Inc.
Electric Cloud
Electric Mail
EMC Corporation
encryptX Corporation
Endeavors Technology, Inc.
Ensim
Entrepid
Entrust, Inc.
Everest Software
Everyone.net

F
FaceTime Communications, Inc.
FalconStor Software
Firetrust Limited
First Citizens Bank
Fortiva, Inc.
FrontBridge Technologies, Inc.

G
General Motors Corporation
Genesys Telecommunications
GFI Software Ltd.
Global Relay
Goodmail Systems, Inc.
Government of Prince Edward Island
Griffith University
GROUP Technologies AG
GWAVA

H
Habeas, Inc.
HDR
Hewlett Packard
Hitachi Data Systems

I
IBM Corporation
IFE Ltd.
iLumin Software Services, Inc.
IMBrella Software, Inc.
IMlogic
IMR, Inc.
Infocrossing, Inc.
Instant InfoSystems
Intel Corporation
IntelliReach Corporation
Internet Commerce Australia
Intradyn, Inc.
Ipswitch, Inc.
Iron Mountain, Inc.
IronPort Systems, Inc.
IXOS Software, Inc.

J
J.S. Redpath Limited
Jabber, Inc.
Johnson Financial Group

K
Kanbay Incorporated
Kerio Technologies, Inc.
Kroll Ontrack, Inc.
KVS, Inc.
  
L
Legato Systems, Inc.
Life Care Centers of America
LiveOffice
Lucid8

M
MailChannels
Maxtor Corporation
McAfee, Inc.
McDermott Will & Emery LLP
McGill University
MedStar Health
Mendocino Software
MessageGate, Inc.
MessageLabs, Inc.
MessageOne, Inc.
MessageRite, Inc.
Messaging Architects
Microsoft Corporation
Mimecast Limited
Mimosa Systems, Inc.
mindSHIFT Technologies, Inc.
Mirapoint, Inc.
MX Logic, Inc.

N
3n (National Notification Network)
NemX
Network Appliance, Inc.
Neverfail, Inc.
Nexor Limited
Nokia Corporation
Northseas AMT, Inc.
Novell
NTT America

O
Ogilvy Renault
Open Text
Openfind Information Technology, Inc.
Orchestria Corporation

P
Palo Alto Exchange
Patron Systems
Permessa / DYS Analytics, Inc.
PGP Corporation
Pictet & Cie
PistolStar, Inc.
Placer County Office of Education
Plasmon, Inc.
Postini, Inc.
PostPath, Inc.
Predictive Consulting Group
Presensoft
Proofpoint, Inc.

Q
Quest Software, Inc.

R
Radiance Networks
Recommind
Reconnex, Inc.
Red Earth Software, Inc.
Reflexion
Renew Data Corporation
Research in Motion
Reuters
Rockliffe Systems, Inc.

S
SAIC
Scalix Corporation
ScanSafe, Inc.
Seagate
SECCAS
Secure Computing / CipherTrust
Secure Data in Motion, Inc.
Securit
Security Financial Life
SearchExchange.com
Sendmail, Inc.
Sherpa Software Group, L.P.
Simply Mail Solutions
SiteScape, Inc.
Smarsh
Socialtext
Sophos
spamMATTERS
Spoken Translation, Inc.
Sprint
St. Bernard Software
State of Maine
StorageTek
StrongMail Systems, Inc.
Sun Microsystems, Inc.
Sunbelt Software USA
SunGard Data Systems, Inc.
SurfControl plc
SydneyPLUS International
Symantec Corporation
Synetek

T
T-Systems Schweiz AG
TechTarget
Telehouse Europe
Teneros
TeraCloud Corporation
Transend Corporation
Trend Micro, Inc.
Tumbleweed Communications

U
United Messaging, Inc.
USA.net
USinternetworking, Inc.

V
Validian Corporation
Vector ESP, Inc.
VERITAS Software Corporation
Vircom, Inc.
Vodafone K.K.

W
WatchGuard Technologies
Waterford Technologies, Inc.
Watson Wyatt Worldwide
WebEx Communications, Inc.
Websense, Inc.
Wingra Technologies
Workshare, Inc.

X
XO Communications, Inc.

Y
Yahoo!, Inc.

Z
ZANTAZ, Inc.
Zenprise
Zimbra, Inc.
Zix Corporation
ZL Technologies