Recently got a MikroTik router and wondered if there is anyway to monitor when iMessages are sent and received.

I know the routers have the ability to export netflow like packets, right? Wondering what port/protocol iMessage are send on and if that information can be captured?

iMessage is standart port 80/443 for data. Port 5223 use for notification.
https://support.apple.com/en-us/HT202078