Still more code the client has to write to do the same thing in a shittier way.
Discussion
The client code would be modified very little, just an extra button & minor backend communication. The server side would basically just be a reoccurring task polling numbers & sending emails.
Operationally simple. Conceptually annoying, but things like this is what will further decentralize hashrate. Shittier is subjective.
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But sure, do nothing for potential customers who have energy & hardware but no lightning infrastructure. Fuck ‘em.