Recently I am seeing several emails which are delayed over a day or so. I'm still seeing regular emails but some just don't get through in a timely manner. The delayed are coming from different emails and providers. A few days ago there was an email chain with a dozen colleagues going back and forth and when a saw a reply to an email that I didn't receive the previous I asked the person to let me know what happens. It took a couple of days but she finally received this message "There was an error while attempting to deliver your message with [Subject: "RE: Re: Michael knocked another one out"] to firstname.lastname@example.org. It has been in queue too long, and will not attempt delivery again. "
I have had the same email account for many years and not sure what to do. The delay in some emails simply doesn't work for me as many are time sensitive. I don't really want to go to a different email account.