I sent out an email newsletter yesterday, just containing some of the links I have been sharing in these notes recently. I'm nopt altogether happy using TinyLetter for it, but not sure I can really justify spending real money on using something like Mailchimp (which I would have to do given the subsriber numbers). If you don't get it, and want to, you can here: https://sensibletech.co.uk/newsletter/
I think in all honestly on the Fediverse platying nicely with Meta / Facebook / Threads / whatever, my view is either you're open or your not and if you are, you have to accept some of the risks as well as the opportunities. I dare say that if some of the more esoteric Mastodon servers operating decided to block Threads, very few people would know or care. If some of the bigger ones, like mastodon.social, were to do so, that might be more of an issue.