I just got pushed Merkuro Mail in Tumbleweed a week or so ago and I like where this is going. It is very barebones, not many options there yet but it looks good and fits into the rest of the suite.
One thing I seem to missing is a way to sort the mail folders? By default it shows oldest on top and starts on top, which is annoying. Is sort still missing or am I overlooking something? Conf file setting fine too. If missing completely, I will keep an eye on development but that means it is too barebones for me still. 