Hi Support Team,

We have an issue with sending emails. 

The error message that we receive is: "Unable to send message, Reason: 550 5.4.6. Unusual sending activity detected. Please try after some time."

We do not have any unusual activity going on but we have been receiving more inquiries from clients due to covid-19. Could that trigger the system error?

Please unblock us ASAP. We need to respond to our clients!

Ray