When using Mail application on an iPad or iPhone, it is possible to attach a document using the "Share" menu to any Trello board but, in a desktop computer, I cannot find the way to attach it, there is not the "Share" menu and seems not to be available to activate it.
But, at the same time, it is hard to believe it would not be possible...
Is there any way to do it?
Thanks!
Here the screenshots: Mail, iPad and iPhone.


