The most efficient and easiest way to share large files (such as videos and audio files) is to upload the file to One Drive (through Office 365) and then get a link for the file, which you can then share via email. Best practices for security of sharing MSBSD information:
After signing in to Office 365
If you need assistance requesting Board Room Support, click the Request Service button below to work with a technician.
Request Service: Email issues