"These are all tools to sort and file more stuff, but none of these solutions try to stop stuff from arriving in the first place. Or to find the email you really want to receive between all the other stuff."
Hmmm...I use gmail to filter stuff I don't really need to read right away ("filter messages like this"), and priority inbox is specifically to find the email you really want to read between all of the other stuff. Why straw-man the competition?
In any case, there is definitely room for email "types" (tags, labels, etc.) that can be implemented in custom x-headers and then get added to the right inbox/queue.
The communication back to the sender is an interesting thing though. If the sender is using something like this, and they autorespond...
Hmmm...I use gmail to filter stuff I don't really need to read right away ("filter messages like this"), and priority inbox is specifically to find the email you really want to read between all of the other stuff. Why straw-man the competition?
In any case, there is definitely room for email "types" (tags, labels, etc.) that can be implemented in custom x-headers and then get added to the right inbox/queue.
The communication back to the sender is an interesting thing though. If the sender is using something like this, and they autorespond...