skip to content



You can read you university's accounts  e-mail messages using the Webmail service in a browser. In Webmail, you can manage your e-mails, organize your calendar, your assignments and notes from any computer with all common browsers. This is an alternative to locally installed e-mail programs, e.g. Thunderbird or Outlook.


You can change the basic settings for your email account in the "Mailportal".  For example forwarding e-mails and out-of-office messages.

Encrypting and signing e-mails via S/MIME

S/MIME (Secure Multipurpose Internet Mail Extensions) is a standard tool to encrypt and sign e-mails. Certificates for the use of S/MIME can be requested by regular employees of the University of Cologne at the RRZK. (Not available for students or student assistants). The use of certificates is not possible under Webmail.


A mailinglist is a summary of e-mail addresses. If you send an e-mail to this list address, it will be distributed automatically to all members of that list. You can also use a mailinglist to provide a non-personal contact-address for a team or a project.

Quick Info

  Serveradress  Port  Encryption 
Incoming mail server (IMAP) 993 SSL/TLS
Outgoing mail server (SMTP) (authentication required) 587 STARTTLS

Please also have a look at the detailed settings.

If you have any questions or problems, please contact the RRZK-Helpdesk