anyone else having problems with the buyer/seller messaging platform today?

finding when i send messages from my mail client (Not within Amazon platform) they are not processing replies till hours after. no issues with mail my end as i can send emails anywhere else in under 20-30 seconds to various domains. just the replies i'm sending from outlook to buyers are taking forever to show up in amazon buyer/seller messages. they do eventually show but approx running 4 hours behind for me today.