RSS feeds maybe? Either host them yourself and have people use one of the many RSS feed readers out there. Or use RSS feed links for Mastodon users (e.g. https://social.kernel.org/users/torvalds.rss).
technically I have infinite addresses
Email addresses can’t be arbitrarily long, so technically you don’t have an infinite number. But you could easily use up as many addresses as there are atoms in the universe every Planck time until its heat death and it would still only amount to an infinitesimal fraction of the total.
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