Hi, 

I've been receiving this error message and it kind of comes at a bad time because I need to send some important emails today... Can you please help meout quickly.

This is the error code:

550 5.4.6 Unusual sending activity detected. Please try after sometime. <a href= https://www.zoho.eu/mail/help/usage-policy.html target=_blank>Learn more.</a> To unblock <a href= https://mail.zoho.eu/UnblockMe  target=_blank>Click here.</a>

Thanks a lot

Black Hawk