> ...email providers to try deploying a key management strategy similar to the one I’ve described in this post. Assuming author meant key rotation, Protonmail[

> ...email providers to try deploying a key management strategy similar to the one I’ve described in this post. Assuming author meant key rotation, Protonmail[1] offers automatic key rotation by using CNAME that alias to DKIM TXT which is rotated once in a while. [1]: https://protonmail.com/support/knowledge-base/anti-spoofing/ https://protonmail.com/support/knowledge-base/anti-spoofing/