I’ve been using eM Client for a long time, even after upgrading to Win10 with no problems. A few days ago Comcast replaced my modem/router and since then I havent been able to have my Comcast email sent to my eM Client email. I tried help from Comcast with no luck, I’ve read and scanned as much as I can and cant get it to work. Very frustrated !
Good news, I fixed it!! Here it was my AVG anti virus program preventing it. I unclicked to scan in coming and outgoing emails and presto! Hope this helps someone else.