Membership in the Email Sender and Provider Coalition is open to email service providers. For more information regarding membership, please contact us at membership@espcoalition.org.

Founding Members:

Acxiom | Digital
Campaigner Email Marketing
Constant Contact (formerly Roving Software)
Datran Media
e-Dialog

Members:

1ShoppingCart.com
ADRevolution
Alterian
aQuantive
Benchmark Email Service
Blackbaud, Inc.
BlueHornet Networks, Inc.
Cabela’s, Inc.
ClickSquared (formerly Click Tactics)
Cypra Media Inc.
Eloqua
Emailbrain / eMail Logics, Inc.
EmailLabs
Emma Email Marketing
Epsilon
eWayDirect, Inc.
ExactTarget
Experian CheetahMail
Fishbowl Marketing
Goodmail Systems
Hallmark Data Systems
Harte-Hanks Postfuture, Inc.
IMN
Implix / GetResponse.com
Internet Marketing Center
Ipsos Interactive Services NA / Ipsos Direct
JangoMail
Knowledge Marketing
LashBack, LLC
LifeScript
Listrak
Lyris Technologies
MediaWhiz Holdings, Inc.
Merkle
Message Systems (formerly OmniTI, LLC.)
Microsoft Corporation
Neolane, Inc.
Port25 Solutions, Inc.
Premiere Global Services, Inc.
Procter & Gamble
Proffiliates, Inc.
Prospectiv
Puresend, Inc.
Q Interactive (formerly CoolSavings Inc.)
Real Magnet, LLC.
Responsys
Results Generation
Return Path
RightNow Technologies
The Rocket Science Group, LLC (MailChimp)
Savicom
SharperAgent, LLC
Silverpop
Splio Development (US)
StreamSend Email Marketing
StrongMail Systems
SubscriberMail, LLC
Traffix, Inc.
VerticalResponse
Virtumundo
Webmail.us, Inc.
WhatCounts, Inc.
Yesmail
Zeta Interactive