Webmail from horder upgrade

Hi I have an old version from webmail from horde. I want to upgrade the latest version on my server with as many optional modules as possible (calendar, tasks etc..) I think I will need about 17 or 18 modules that they will be good to me. If you have another webmail software better than horde. it can be good Please let me know. The upgrade must be flawless without taking the mail server down. You must give past experience on this type of work. Thats all Hernando ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Deliverables must be in ready-to-run condition, as follows (depending on the nature of the deliverables): a) For web sites or other server-side deliverables intended to only ever exist in one place in the Buyer's environment--Deliverables must be installed by the Seller in ready-to-run condition in the Buyer's environment. b) For all others including desktop software or software the buyer intends to distribute: A software installation package that will install the software in ready-to-run condition on the platform(s) specified in this bid request. 3) All deliverables will be considered "work made for hire" under U.S. Copyright law. Buyer will receive exclusive and complete copyrights to all work purchased. (No GPL, GNU, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the buyer on the site per the coder's Seller Legal Agreement). ## Platform PHP Lunix Sever webmail Horde