This just polls every x (default 30) seconds; if you use IMAP you can do better with IDLE (e.g. I pipe `fetchmail --check` to something that triggers a sync to immediately get new mails)
_flux · 1h ago
I wonder though if also the Gmail interface supports something like this? It seems it's pretty fast at receiving email.
Are there any other provider agnostic tools with similar capabilities?
https://jmap.io/spec.html