Following the advice of Sandeep, my colleague, CEO to Indianic, I have moved all our corporate e-mails to Google Apps.
This is wonderful!
Every member of the team gets 7Gb of e-mail space, all the great Gmail functionality + you can set it up so you still use your domain name (injoit.com in our case). No problem of losing any single e-mail of your clients anymore, no spam, easy access through POP3 or webmail.
Morevover, members of your team can use all the great Google features such as Calendar, Contacts, Sites, Docs, Chat and there is a great permissions management service so you can actually choose between storing data privately, sharing it with your team or making it public.
This is just great bunch of solutions from Google coming for free so thanks very much for them as they will help to do our business more effeciently.
In case you would also like to set up an account, start here:
http://www.google.com/a/cpanel/domain/new?hl=en