I have same question on stackoverflow, this is probably better place for it.
We are using JIRA to handle support requests, they are logged with same issue type (a customized type: Support Tasks) and created by users.
These support tasks are in different areas and handled by different teams. Users will able to specify which area they are in by select a component when they create support request from web UI.
Now, we would love to allow user create support task by simply sending emails. The email handlers can only configure issue type. We could create more issue types in the project, but it seems to be messy.
Any suggestions?