"Also send me a one-time email..." checkbox is needed even after the subscription; want to test all functions

I wish the checkbox "Also send me a one-time email containing all items currently available on this feed." appeared again on subscriptions page. I strayed for a perfect RSS feeder, and I think this service is totally awesome; although I'm still working on testing variable functions on your page, and I really need to get my feeds whenever I want like once did with the "Also send me a one-time email" checkbox while testing is done.