Hi, everyone. I looked into this, and discovered there's no way to easily turn off notification for your own posts, while keeping the "Subscription" feature and the reply notification active. That doesn't mean it's not possible - just that I can't figure it out myself. We'll add this to the list of requested improvements and changes.
However, in the meantime, you could experiment with the filtering options in your e-mail client. I use Outlook on my desktop, and I was able to create a filter that looks for my name in the BODY of the message - that's probably the only way you could catch your own posts. Each e-mail notification seems to have "By [your exact display name]" right under the link to the post. I'm already successfully using filters to put all of my forum posts in their own folder, so it doesn't seem too bad to add another filter.
Anyway, thanks for the feedback!