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Webmail Instruction

The RRZK provides a webmail- and groupware web application. This allows you to organize your e-mails, your calendar, tasks, and notes from any computer worldwide, with all common browsers.

As long as you use the protocol IMAP, you can use this system in parallel with all common e-mail programs (for example Thunderbird or Outlook).

Login and Set-Up

You can login using your student's or employee's account using this address:


For Mode, you can choose between Automatic (recommended) and four other modes that are targeted to towards specific devices or circumstances. Please note that the modes Mobile (minimal) and Basic will no longer be available after the next major upgrade of the webmail service.

After your first login, you have to adjust the settings and add your personal information. It is recommended to register with your full and correct name. Please note that these settings cannot be changed in Smartphone/Tablet mode.

Groupware Functions

Besides the usual e-mail functions, Webmail provides a range of groupware functions. Especially the calendar and the task management can be very helpful. You may share your calendars, notes, and tasks with other users of the system.

When you set up a date in your calendar, you can invite other participants. You can do that by inserting e-mail addresses, not only of university members. If you select "Aktualisierungen an alle Teilnehmer schicken?" (send update to all participants?) all participants will get an invitation via mail which they can either accept or reject.

Weitere Informationen:

Um im Webmailsystem eine Absenderadresse in der Form vorname.nachname@(smail.)uni-koeln.de einzustellen, bearbeiten Sie bitte die sogenannten Identitäten. Folgen Sie dazu der Anleitung für das Bearbeiten von Identitäten im Webmailsystem. Informationen zur erfolgten Webmail-Migration im Sommer 2015 finden Sie unter dem Punkt Umstellung. Damit einhergehend finden Sie Anleitungen für den Fall, dass Sie seit der Umstellung E-Mail-Ordner vermissen beziehungsweise Ihr Postfach überfüllt ist aber Nachrichten nicht gelöscht werden können.

If you have any questions or problems, please contact the RRZK-Helpdesk
Phone: (0221) 470-89555