Email alerts are available again for my Android attestation server. It's using a local OpenSMTPD server this time around to avoid having any fees or problematic rate limits.
Other than the tutorials and documentation being missing, it's fully restored at attestation.app.
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Remaining work to restore this project will be overhauling the Auditor app. It needs new branding / naming, signing keys and of course will be hooked up to attestation.app for the optional scheduled remote verification feature. Code that I don't own will be rewritten too.
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Once that's all done, it can be republished on GitHub and the Play Store. It was already complete other than adding more frills and expanding device support. It's very easy to use and putting together some good tutorials to explain how and why to use it will be straightforward.