It's the old CKPoolMonitor app from years ago. I got that same email, though if you look at it a bit more closely it says found after 0 days, 0 hours,0 minutes at 27.6% diff. Diff is right for the pool at that time, but block solved and times are...??

No one likes a tease! Mine ON!

It is why I realized it was wrong I went to check how big the new block was.
I found none on block explorer then went back to the email and read all the 0's
I said to my self better delete it.