@drwho @Polychrome I spent a bit of annoyance writing an RSS notifier (e-mail newsletters and Mastodon announcements supported) that is careful not to send the same item twice, (As identified by RSS GUID… if the GUID changes, it would; if that comes up I’ll also track link URLs and never resend those. But I haven’t seen that in the wild yet.) Anyway, if you are interested it’s https://github.com/swaldman/feedletter I’d love any feedback, and would be glad to help.