[eins1234]

I don't know a whole lot about how email works under the hood but...

When the best vendors out there proudly advertise multiple whole integer seconds in average latency in the best case (https://postmarkapp.com/why), I can only assume there's a lot of room for improvement for the protocol itself, and it's not just an issue with clients.

Sending text between servers on the internet shouldn't take this long in 2022.

(And holy crap what's with Apple's 99s latency?)

[anamexis]

In the context of email, why does multiple-second latency matter?

[smiley1437]

I believe the response times of IM chats - something that looks superficially similar to email - affects people's expectations of response times in email.