FYI, there's no guarantee of delivery, ever, where e-mails are involved. Guaranteed delivery is not one of its features. Best-effort store-and-forward, yes; for

FYI, there's no guarantee of delivery, ever, where e-mails are involved. Guaranteed delivery is not one of its features. Best-effort store-and-forward, yes; for guaranteed delivery, you need a different tool. (I do wonder what's in it for Jumprock, too)