I just sent a reply to your post (see below) and it does not show up either. So it would appear that the rate limit is still in effect. In total, I sent in 5 replies via email (including the one included below; originally sent Sat, 06 Sep 2025 14:50:55 +0000). Only the first one of those five replies was accepted. All subsequent replies were rejected.
If there was a way of making reply by email work again, I would very much appreciate this, since it would save me the trouble of manually reposting every reply via the web UI.
Repost of the original reply
ah, I found your original mail now - it ran into a rate limit
Good to hear that you figured out what happened. Also, thanks for getting my reply processed, I guess – although I had already reposted my reply manually once I noticed that it did not show up 
Now, does that mean that future email-based replies from my address will work again? In total, I sent in 4 replies via email (not counting this one) – of which only one was accepted and 3 were rejected.
Accepted replies:
- Support for non-chatmail email - #5 by seifferth [Tue, 02 Sep 2025 08:32:28 +0000]
Rejected replies:
- Support for non-chatmail email - #8 by seifferth [originally sent Wed, 03 Sep 2025 14:40:57 +0000; manually reposted later]
- Setting the email subject for new contacts - #4 by seifferth [originally sent Thu, 04 Sep 2025 08:57:14 +0000; manually reposted later]
- The test reply I sent to this thread right before posting My replies do not appear in threads - #3 by seifferth [originally sent Sat, 06 Sep 2025 09:40:29 +0000; never reposted manually]
I’ll be curious to see if this reply shows up. If it does not – or if any other reply gets stuck – I’ll post further updates to this thread.