1. Disposable email is becoming a necessity because of frequent leaks<p>2. Current disposable email requires a trusted intermediary<p>3. There are many tiny providers that might disappear overnight, therefore insufficient for using with financial accounts.<p>Apple offers something like this at scale, but only for Apple users.<p>What would a decentralized solution require?
AFAIK most of the temporary use providers are blocked by major corporations as they learn about them <i>through fraud incidents</i>. Some here will state they do not run into issues with <i>{xyz service}</i> but that just means that particular domain has not crossed the abuse incident threshold for the corporations they utilize <i>yet</i>.<p>The only method I know of that has even limited capabilities that you are looking for would be to register a few domains and point the MX records to a VM. Set up postfix to queue/relay the emails to wherever you want or to a local mail directory/file. Even that is becoming problematic with companies that have a large amount of fraud. The most notable I have run into recently was Wireless providers. I had to get on a call with their support team and escalate to unblock my personal domains. Even then it was case-by-case as my domain is only unblocked for my account, nobody else could use any of my domains without talking to support.