Gmail is IMHO still the best mail provider – and in combination with Google App for Business, the best groupware provider. I have tested many alternatives but

Gmail is IMHO still the best mail provider – and in combination with Google App for Business, the best groupware provider. I have tested many alternatives but I still mostly use Gmail. The reasons are mostly the feature set, the pricing, the security and the storage capacity. There are only two major annoyances in my daily use: More and more Google+ integration, lacking IMAP support. The latter lead me to use Google's own apps or Google-specific browsers like Mailplane. For heavy mail (and groupware) users, they only other alternatives is Exchange. Outlook.com/Office 365 is OK but very 'Microsofty', Hosted Exchange is a complete disaster.