You will find a short guide how to get started with Keepmark in the attached video.
See attached video to see how to configure email account in Keepmark.
Yes. The Trial version is limited to 20 indexed tasks and 20 indexed documents.
You will find a short guide how to configure workspace synchronization in the attached video.
No. Currently Keepmark is a desktop application. However, documents are stored in a user-accessible form and can be synchronized with mobile devices, e.g., using services like Drobox or the WebDav protocol.