Mobile device signatures
At the moment the only way to deploy signatures on mobile devices is thrue serverside or using custom webmail shortcut.
Problem with server-side is that the whole organisation has to be configured that way. Maybe it is possible to create this on a per user base, because not everyone needs signature on their mobile device. And the disadvantage of serverside is big, because there is no signature during designing an email.
Solution could be that during new mail (outlook) normal procedure is working, and only at mobile devices serverside is working.