NRAO Webmail Portal



NRAO Webmail - Secure access to your email from anywhere

The legacy site-based Webmail service is (mostly) based on a software package called SquirrelMail. Each NRAO site (CV, GB, AOC) has its own installation. You should pick your home site below to login to these servers.

The RCmail webmail system has been de-commissioned. It was an experimental service but became un-maintainable for various technical reasons.

If you have never used Webmail before or have questions, check the documentation or ask the helpdesk to set you up.

NOTE: Users of mail in the O365 cloud (that is basically all NRAO staff) may use Outlook Web Access (listed below as "Outlook") for their mail, but cannot use the squirrelmail [webmail.site.nrao.edu] front-ends other than to look at legacy MBOX or Maildir format folders left behind after the migration from Unix mail.

Before you try to login to webmail, make sure that cookies are not blocked in your browser!

To login at a particular NRAO site, choose one here:


Policy, Terms of Use

National Radio Astronomy Observatory computing facilities are exclusively for the use of authorized personnel, who are expected to abide by the terms of the NRAO Computing Security and Computing Use Policies.

Usage, including the IP address of your computer, is logged, and logs are monitored routinely.


Webmail References

  1. E-Mail User Documentation (requires AD authentication)
  2. SquirrelMail Site
  3. (Historic reference only: RoundCube (RC) Mail)
Modified on Wednesday, 13-Aug-2025 14:19:45 EDT