Originally Posted by
DeltaFan4Now
I would definitely worry: The squishy word "may" in "Tickets may accumulate miles" is troubling in that it may be only for certain fare classes or other things that are not explicitly stated.
Unfortunately, any time one uses a certificate on DL's website, the website will ALWAYS state that the ticket doesn't earn miles. So, I am quite sure the flights will earn full miles.
BTW, I received the same e-mail. I just don't like the extremely short window.