In-reply-to » I've been thinking of how to notify someone else that you've replied to their twts. The only reliable way to let the other party know is to write an e-mail or any other out of bounds communication mechansim. There’s just the User-Agent header in the discoverability extension of Twtxt itself that comes close: But it requires feed operators to actually play along and check. Active pushes are prone to spam, so I actually view the lack thereof as a good thing.

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