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@hansw@mastodon.social
I dont know if this is actually how it is handled, but this is what I would do if i was coding mastodon to address both these concerns...
Upon the deletion of an account all data including email is wiped. Though the username remains reserved. But the email is replaced with a one-way crytographic hash of the email. So the email cant be recovered directly. Then if someone wants to register the same username they can if and only if their email, once hashed, matches the hash on file.
