Is all email still delayed by 30 seconds or more?

Support first denied it's a problem, saying email was never meant to be realtime (doesn't change I'm receiving OTPs on it and sitting there waiting for their server to get off its ass while it's expiring) and to come back if it's ever more than 5 minutes delayed. So I do some shell scripting to find those emails and supply a list of emails that were delayed more than 5 minutes (visible by the Received headers that the problem is between Runbox internal servers). Then they ghosted me. And ignored an inquiry about the ticket status iirc about a year later. Another year later, we moved away iirc for some calendaring reason, so I don't know what things are like since about 2022. I self-host personal email and it often pops the "you've got mail" before the sign-up page finished loading. Feels like it's coming from the future so fast compared to the experience I had at work 😅

I loved Runbox in every way except for this email delay. If this got fixed, I'd recommend it to people again as the #1 thing to use since this question comes up with some regularity on various platforms but this really bugged me and sometimes seriously got in the way

Edit: CC @ExtremeDullard@piefed.social — do @ mentions work when edited in?