Webmail Instruction

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

As long as you use the protocol IMAP, you can use this system parallely to all common e-mail programs. If you use POP3, this might lead to problems.

Login und Set-Up

Srceenshot des Eingabefensters zum Webmail-Login.

You can login with your smail- or uni-account, here:


For "Modus" you can choose between the standard surface "Traditionell", the more modern, AJAX-based surface, "Dynamisch", and the simple surface "Minimalistisch", especially for mobile devices.

After your first login, you have to adjust the settings and add your personal information. Please register with your full and correct name.

Help and Documentation

You can open the online-help with this icon  in the menu bar. It explains all important functions. The help is context-sensitive which means that it will only explain those functions that are shown on the surface at that moment.

In case you experience more technical problems feel free to write an e-mail to the Beratung for advice. Please send a detailed description of your problem and name the browser you use and its version (for example Internet Explorer 7.0)

Documentation for the use of Groupware Webmail Edition

Security Advice

You can find information about the process of certification on the web side of the certification office of the university.

Zertifizierungsstelle der Uni Köln.

Especially when you work with computers that are not your own it is important to logout after each session with this button  

Encrypting your e-mails via GnuPG or PGP is only possible indirectly by encrypting your text on your local computer with GnuPG or PGP and then copy and paste it to the webmail interface and then send it.

Groupware Functions

Besides the usual e-mail functions, Webmail provides a range of groupware functions. Especially the calendar and the task managment can be very helpful.

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.