Hi there, OP.
This wasn't actually the post we originally emailed you about. That one, we won't repeat here as it feels a bit unsporting, but it was a very clear personal attack, which is against our talk guidelines. Looking at our correspondence with you, we mentioned in the same mail that you'd had other posts deleted, you asked for examples, and we sent you two, one of which was the one you quote here. Had your only deletion been for this post you mention we would likely have simply assumed you were having a bit of an off day or had strong feelings on the issue and left it there.
So although we do believe it was still a personal attack, we did only delete that one on this occasion. You were sent the email following another personal attack (and more deletions), and we mentioned that it was not your first deletion so you'd know it wasn't an isolated incident.
We're all for free speech and we don't mind the odd comment that's close to the bone, but when it looks like a bit of a pattern, it does become a bit of an issue and we need to be upfront about that. Our aim is to help conversation flow freely and repeated comments like this don't help. It's honestly not our intention to be condescending but we do have to apply the rules fairly. We aim to give everyone a few chances, but when someone has had a few deletions for the same sort of thing, we feel it's only fair to let you know why it's been an issue and what the deletions were for, otherwise, how would anyone know?
We're very happy to chat to you about it further off the boards if you'd like us to reconsider any of these deletions or you'd like a bit more info on why we decided to delete them originally. Honestly, the last thing we want is for anyone to feel like they're at a loss. That's the reason why we send out mails like this.
We hope that helps explain it all a bit more but do drop us a line if not. We really just want to help threads flow well and let everyone have their say without threads turning into bunfights. We don't intend these mails to be a big deal at all, we just think it's best to be upfront about these things and hope we can have a frank conversation with Mumsnetters.