Group Conversations by Topic
Group Conversation Format should be an email type. The email standards body needs to amend this type so ALL email systems can take advantage of it.
Threading is not enough when multiple people start responding to a topic it needs to be in group conversation mode.
outlook groups, somewhat deals with this but it is not an email standard and OTHER non-outlook users wont have the same experience.
Further, and to this end, sub-topic conversations within the SAME Conversation are necessary.
For example: A conversation relating to "Contract Details".
Each of the above sections might require multiple interactions with multiple people and will continue to be updated as those exchanges happen. It needs to grow not linearly by "length" but updated in "its place". So that mini group conversations as a thread occur in the main and original conversation.