<oembed><type>rich</type><version>1.0</version><title>Martti Malmi wrote</title><author_name>Martti Malmi (npub1g5…3drvk)</author_name><author_url>https://yabu.me/npub1g53mukxnjkcmr94fhryzkqutdz2ukq4ks0gvy5af25rgmwsl4ngq43drvk</author_url><provider_name>njump</provider_name><provider_url>https://yabu.me</provider_url><html>You could deterministically generate the outer key from your private key and the recipient&#39;s public key, so it will be the same every time, even if your devices are not in sync.</html></oembed>