As the name implies Kopano Core sits at the heart of every Kopano environment and is therefore a key figure in our promise to deliver stability and extensibility of Kopano’s proven communication platform. Kopano Archiver provides a way to minimize primary mailboxes by moving older messages to slower (and presumably cheaper) storage. Kopano Archiver consists of additional components that allow running Kopano servers dedicated on slower storage for archived messages whilst keeping them available transparently to the user.
Improved memory management
With Kopano Core 8.3.0 we’ve made progress on our continuous endeavor on delivering the best quality of our product to the vast amount of platforms we provide Kopano for. With that in mind, 8.3.0 has received many memory related optimizations, that allow less memory usage over time and simultaneously optimize performance with our Kopano Core stack. With the introduction of smart pointers, we are able to deal much better (and faster) with certain memory operations, allowing this performance improvement for our entire Core stack.
Improved performance for IMAP
The code chain behind LIST, SELECT and STATUS calls has been optimized also by introducing a special folder cache which improves overall performance when using the Kopano Gateway. Using these optimizations by running Kopano 8.3.0+ results in generally a lower load while at the same time providing better overall performance since less threads are blocking the main server threads from processing requests.
Reduced dependencies
Before Kopano Core 8.3, we have been utilizing the boost libraries, which was also required as a runtime dependency. With Kopano Core 8.3, boost is not required anymore, since the dependencies have been re-developed based on the C++11-provided function set. The former build time requirement of xmlto is also no more necessary.
Several improvements
With the feedback received over the last weeks, we’ve been able to enhance multiple aspects of our PST based migration tool which has been included first with Kopano Core 8.2. The optimizations include better support for mail distribution lists and now it can also deal with certain arbitrary character-sets which were reported to us by customers.
As with every release, we’ve included a large amount of fixes and improvements, ranging from python-kopano to additionally recognized out-of-office headers in e-mails. For a detailed overview of changes, you can check out the general changelog, alongside our documentation.
Where do I get the packages?
The packages can be found in the repositories, the portal and the download server (all require login). You can find the latest development version of Kopano Core on the community download site.
We are really looking forward to your feedback on this version as this will help us further improve and adapt Kopano Core and Kopano Archiver to fit the required needs best. Let us know what you think by sending an email to , or posting over at our new Kopano Forum.
