This master's thesis describes implementation of a system for voice mail storage and message management. The aim of the thesis is to replace the exsisting Mail Transport System MTS with the new system, which is called VoiceMail Storage System VMSS. We split the solution into two parts. First part represents the system for storing voicemails directly to hard drive. In second part we upgrade the first part by Infinispan platform, which speeds up the performance becouse it stores files in a cache. Infinispan platform provides voicemail storage even in case when voicemail service is running on multiple application servers.