We are working on enabling larger organizations, that have E3 or E5 licenses. This will also enable internal scenarios.
We are not planning to support Pro Plus, as we are building on top of many Office365 Services such as Email, which are not included in these licenses.
79 votesChff commented
I have Microsoft Office Professional Plus 2016 and would like to get OCM as well
Thank you to everyone who voted. We’re happy to report that we’re working on sync’ing signatures across devices. More details to come as we have them.
Ricardo, Duncan, Sunder and David on behalf of the Outlook teamChff commented
Should be saved together with the PST file, pity to have to create a new signture every time,