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Central Email Service (CES)

NIH Central Email Service (CES) is a centralized email messaging service with the following features:

  • Standard mailbox offering of 1 GB of storage
  • Outlook Web Access (OWA) for mailbox access via the Web
  • Robust Anti-Spam and Anti-Virus protection for all mailboxes
  • Instant Messaging Services with presence information
  • Wireless messaging for BlackBerry and ActiveSync devices
Additional and optional services include extended storage capabilities (Large Mailbox), and Secure Email/File Transfer Services.
Email High Availability/Disaster Recovery for critical users and VIP mailbox services are determined by ICs.

Customer Benefits

CIT provides customers with a robust, fully featured, centralized email service.

Customer Market

This service is available to all NIH customers.

Frequently Asked Questions

Q: How much does the extended storage capability (Large Mailbox) service option cost?
A: Large mailboxes are charged for each allocated GB over the 1 GB standard. For current rates, see the Messaging Services section of the NIH Data Center Rates page at
Q: How can I make sure my legitimate email does not end up in the spam filter?
A: CES’s Anti-Spam protection includes safelists; by adding a specific sender’s email address to a safelist, you ensure that mail from this sender is sent directly to your inbox without going through the anti-spam scanners. You can also add a specific domain name to the safelist so that all email messages with the specified domain in their sender address go directly to your email inbox. For instructions on how to add an email address to a safelist, go to the NIH CES Personal Safelist/Blocklist Management webpage.
Q: Can I block specific senders so I don’t get their messages at all?
A: Yes. To block a specific sender, add the sender’s email address to a blocklist. You can also add a domain name to a blocklist so that all email addresses containing the specified domain are blocked. Blocklists prevent all email from a specified sender from reaching your inbox. For information about using blocklists, go to the NIH CES Personal Safelist/Blocklist Management webpage.

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This page last reviewed: March 09, 2011