Thanks for the quick response! It would be a great addition I think. I'm unable to use the software without that feature, or would have to use a second SFTP client with a scheduler and would much prefer a single solution.
If your SFTP client can start with command line parameters you can use "Run after" panel to start your FTP client after archive is completed and use [Zip Name] macros to send archive file name as parameter to SFTP client.