To send files on the Skype desktop app, you can simply drag files into the app. On a phone, you can only send photos.
You can share files and folders on OneDrive from within Office apps, from your desktop, or from the OneDrive website.
The easiest way to increase attachment size in Outlook is to edit MaximumAttachmentSize DWORD file value in the Registry Editor on Windows to the desired size and save it to increase the attachment ...