Air Explorer is always adding new cloud file servers as a Mail.ru to be the most complete software to manage cloud servers.

Cloudmail.ru is a Russian cloud server that gives you 25 GB of free for your files. You can add it to Air Explorer easily.

First sign up in Mail.ru and create your own account.

Part of the sign up process is to create an email account.

When you finish to sing up in Mail.ru, in Air Explorer open the Account window, select the Mail.ru logo and enter your user/email account and password.

Then you can work with it. Mail.ru support in Air Explorer includes viewing thumbnails, file searching, transfers to and from other servers, etc.

You can check more information here:
-How to register in Owndrive and enjoy it in Air Explorer
-Datto Drive in Air Explorer
-Transip Stack Storage in Air Explorer