Such feedback often assists in the revision stage that every writer embarks on prior to the important task ahead of marketing material to the industry. Obviously this correspondence works best when two parties feel that they have a common need and respect for each other's creative work. Registration of a writer's project prior to sending it to anyone, anywhere is always the wise business choice. Another opportunity the Net offers screenwriters is the ability to work on screenplay projects together, even from remote locations. Willing to tempt the techno-fates, between March and September of 1998, I wrote my first collaborative screenplay online.
Nothing has to come off the cuff.
You construct your thoughts at your computer. Only then do you hit the 'send' button. You pass on to your partner your well-constructed, thought out ideas. You work at your own pace. If you're done for the day, you're done.