Ok, next on my wish list for these /email urls:
1. Change title to: "Send sats to [email] (BIP353)"
2. Check if there's a gravatar and set it as <meta property="og:image"> 

https://gravatar.com/2ef4e86a6b0e3ba9680897801bdbc6e0d8a497948e764837a0198c63e93f1b6f https://image.nostr.build/063af2ff615b3532e0b6c87f8bb8185808c697c551d8d97ebeb5cc9c0371250a.jpg  

 The website is open-source, though currently entirely static…IIUC to do those changes it would have to no longer be static :/ 

 Both can be done with javascript Dom manipulation. Most web crawlers will do some basic javascript these days, though I haven't tried this tag.