@Lolakath19
I only know from one other parent at my DC’s prep that they received the email (plus you did too) - so sample of 3 for sure :-)
Having said that, I have not asked around so have assumed everyone who got through to stage 2 of LU received the email because I can’t believe they would send it out selectively at this stage of the process (surely that wouldn’t be allowed for GDPR or whatever?).
It was ill-judged IMHO, especially as the email references enjoying meeting my DC but with no caveats about tough decisions having to be made over the next weeks etc. Just a hard sell on how great the school is!!