So why not simply begin with a mail client plugin for that? I imagine something like that: When the user clicks "New Email" and types in the mail address the

So why not simply begin with a mail client plugin for that? I imagine something like that: When the user clicks "New Email" and types in the mail address the mail client would automatically connect to that domain and retrieve a list of the required metadata. Or you'd need to send an email that nobody except your server will ever see. But that may be too slow. Then in the mail client you will get a notification (hopefully not an annoying popup) that the server supports "semantic mails" and that when using it you make the lives of people easier and probably get an answer faster. What types of mail does it support? (Bugreport, Task, ...). That's the first thing you chose. What fields are required? What fields are optional? What data type does each field take? You then can just draw appropriate widgets. That would be a basic idea. Probably needs some tweaking, but doesn't seem that bad to me.