What are the steps to send logs, files, screenshots, etc to BMC Software related to a Support Case?

Instructional video:
https://www.youtube.com/watch?v=2SfnIOWxCzU

Additional Information regarding SFT usage and retirement dates for FTP and SFTP:
Update May 2020: sftp.bmc.com and mft-cs.bmc.com (different than mft.bmc.com mentioned below) will be retired on July 31, 2020
Bulletin Nov 2019: http://documents.bmc.com/supportu/952/06/15/520615/520615.pdf

Option 1 (preferred): Upload files directly to the Case
Login at www.bmc.com/support and under "Case Management" -> "Submit and Manage Cases" open your existing Case or create a New Case if this is a new issue.
At the bottom of the Case details, click the "File" option, click on "Upload a file from your computer", then "Choose File" and upload all relevant files to that Case.
NOTE 1:  The file size limit is 2GB for each file.
NOTE 2:  Only upload files that relate to the specific Case.  If you need to upload other files for a different Case, open that Case first and upload specifically there.


Option 2: Upload files via SFT (Secure File Transfer)
a. Connect using one of the following 3 protocols
   - Via browser using HTTPS at https://mft.bmc.com
   - Via ftp client using SFTP at mft.bmc.com port 22   (NOTE: transfer all files in binary mode regardless of file type)
   - Via ftp client using FTPS at mft.bmc.com port 990  (NOTE: transfer all files in binary mode regardless of file type)
b. Login with your BMC registered user that you currently use at www.bmc.com/support
   NOTE 1: This must be the same email address in the Contact information of the current Support Case
   NOTE 2: The user name for login must be the full email address, not an alias or nickname
c. Mandatory: Create a directory named:   case_#####
   Or navigate to the existing case_##### directory if you have already sent files for this Case previously
d. Upload the files to case_##### directory
e. Notify the technician in the case that the files have been uploaded

Option 3: Email files to the Case
Email the files to the Case using any of the official emails you have received from customer_support@bmc.com specifically for the relevant Case number.
The files are automatically attached to the case.
NOTE:  Many email servers have file size limits or security concerns (blocking potentially hazardous file as .jar, .reg, etc) that make this option less effective than the above options and can cause emails or files to be lost.

NOTE: The option for sending files to ftp.bmc.com/incoming is no longer available as of Feb 2, 2020