Saving Output

[mahills]

I'm brand new to using this product - it's excellent btw. My question has to do with the output file that is saved. We don't need to keep the output file permanently, we're just using the tool to produce an email attachment and want to keep using the same file name ("output.pdf" works fine). Unfortunately, if the file name has been used, it doesn't overwrite the existing file. Is there someplace I can change this, or do we need to use unique file names and/or keep cleaning out the directory? Hope this makes sense. Thanks!