Invoices, statements, reminders, receipts and published dashboards send from
mail@send.neocapital.app with your display name, and replies go to your
own address. That split is deliberate: mail claiming to be from your address but
sent by our servers fails SPF and lands in spam.
Sending is part of your subscription, so
there is no key to set up and all you choose is how your mail signs itself.
Rendered from this book's own documents: exactly what the customer receives.