Over the last couple of weeks I have noticed that email notifications to threads I am subscribed to are messed up.  They come out of order and sometimes a day later.  Before I noticed this i would get notifications almost immediately after a post is made.  

Today I got notification emails a couple hours after posts were made.  After getting caught up a short time later I get an email notification to that same thread of a post made a few hours before the posts i had just received notifications on prior to that.

Anyone else having this issue?   I have gmail for email.

Yes! I'm seeing the same thing. For a while now I've had all D&DBeyond notifications forwarded to a service called Pushover that would send me a notification on my phone so I could stay on top of my forum posts when I was away from a proper computer. It used to work flawlessly, but over the last week or so, all my notifications have been coming in batches. I'll get maybe a dozen emails for all the notifications I've received over the last few hours. 

I know an official API isn't coming for some time, but if there way anyway at all for forum notifications to be added to that API, I'd sure be grateful!