We do not offer this option in Producteev at the moment but it's a good idea!
I can't promise that we'll develop this feature soon, but we will definitely keep it in mind for a future update.
Just adding a reply to this so that you know that someone else out there would love this feature!
Perhaps also having email-to-task working a similar way (e.g. if I send from my work address, it goes to my work network)
I like this idea too!