no problem! I would advocate for a gradual enhancement of service - both on your end and for customers - and in that light, the option to pay-per-send (with lightning) from the web UI sounds really perfect. personally I'd go that route before getting into a "premium" tier that I'm not sure I need. pay once for a year of unlimited receive; then optionally pay per send on demand. pay-per-X (email, AI queries a–la @PayPerQ, etc) is such an insanely promising avenue that Lightning affords. anyone who gets there early will be very happy. I will caveat this though: if doing PGP encrypted emailing (on user's end. lnemail doesn't need to add encryption) requires attachments, that would be really important! no way I'm using a "private and no-kyc" email provider if I can't encrypt my plaintext. for the pseudonymous privacy user, you don't actually need (or desire) your email provider to handle encryption. It's probably more desirable and trustless to encrypt your own plaintext and just count on the provider for delivery of the ciphertext and no-KYC signup. once you can get a decently reliable email provider without KYC, the privacy part is fully doable with PGP without the provider providing any other features. ...except maybe attachments.