> Slow performance: Current solutions only offer a single region for email sending, even when all your end users are located in another part of the world. We allow you to choose what region your emails should be sent from (US, Europe, or LATAM), which minimizes latency and improves time-to-inbox.
Why does this matter? Does the difference ever realistically exceed even one second?
(Assumptions: being transactional email, messages are generally small enough to play well with typical TCP window sizes; and you can send a message within about three round trips, which I could easily be wrong about—I suppose you’ve got TLS handshake, SMTP handshake, then data, not actually certain how much blocking happens in each of these steps. Maybe two seconds is a more realistic maximum realistic difference?)
Why does this matter? Does the difference ever realistically exceed even one second?
(Assumptions: being transactional email, messages are generally small enough to play well with typical TCP window sizes; and you can send a message within about three round trips, which I could easily be wrong about—I suppose you’ve got TLS handshake, SMTP handshake, then data, not actually certain how much blocking happens in each of these steps. Maybe two seconds is a more realistic maximum realistic difference?)