I know currently we have the ability to hide the message counter and have it show up in the header instead -- this would allow clients such as gmail to use the conversation-threads feature as normal.
Unfortunately, via Gmail, there doesn't seem to be a way to filter based on header fields, so we have no idea when we are reaching the end (or -the last one!-) of a disposable address without checking the header manually ourselves.
Any chance we could configure the message counter to show up in the FROM name instead?
I'm not 100% sure this would still show up as conversation-threaded in gmail, but someone might have another use for this as well?
Thanks!