This is to certify that Mayeryn has performed corporation Zimbra server’s installation and configuration for our company. The whole process went smoothly and according to our requirements. All throughout our cooperation we were kept informed and no communication-related problems were encountered. Any technical problems reported by us were instantly fixed and dealt with by the company’s employees. Due to their expertise and high performance the project met the deadline. Our cooperation with Mayeryn was not only fruitful but also satisfactory. We would highly recommend them for any IT-related projects.