Different "File Exist" rules for different file types?

This is a long shot. Is it at all possible to have different File Exist rules for different file types?

Specifically, if it's a jpeg being uploaded, I want something like "skip if exists" -- irrespective of dates and sizes.

And for anything else I would like the "default" behaviour.

Is there any way I can achieve this with SmartFTP?

Perhaps a two-stage transfer is possible with filters? First transfer with "FilterA + FileExistRulesA" and second transfer with "FilterB + FileExistRulesB"?