Nice, I had to reserve a top restaurant in Rotterdam the Netherlands by email, I believe I failed because of ProtonMail's "Undo send" feature, which I believe just delays actually sending the mail (I cannot think of any other way it would do it). Frustrating, I wish they had a nice API so I could have my unfair advantage. Privacy is for nerds, and soon, all the best restaurants are too ;) (but kuddos to OP for sharing this code.)