Some mail servers are extremely picky, and a few have been reticent to accept mails from this site in the last few months. We've made various changes to prove to other servers that we're totally, absolutely, no-worries legit so hopefully that'll clear up the problem. Of course, it's always worth checking your spam folder!
The next Newsletter will go out on Thursday 31 March (or the day after) so we'll see how it goes then.
I've just sent out the April Newsletter (#60), so it should be heading to everyone's inboxes over the next few hours. If anyone subscribed to the Newsletters doesn't receive it (please check your spam folder!) let me know and I'll look into it.