My response is more tuned towards corporate/enterprise/more-than-20-person teams.

so we got salesforce for CRM, getsatisfaction/others for support, jira for project management, tons of enterprise minded apps, yet people resort to email. why? its easier to just type in an email as opposed to logging in / filling a form, and last but not the least treating notifications sent by email in same vein as a human being.

Whats pathetic is "IT" sets up these apps and does pilot program and claims success.

I believe more idiot-proof-apps, as easy as email client app shows up, lesser will be "emails"