GSA Email Spider: Automailer with proxies

I have a question regarding the Automailer, DirectSend and proxy servers.

If you setup the automailer to direct-send using proxy servers (from the proxy scraper), will the program send using any loaded proxy (socks or not), or the proxies are only for spidering, and not for mailing?

I know DirectSend has poor delivery rates, but I want to use it anyway.

I'm using GSA Email Spider 7.02 registered version.