I have an account with optimum.net I no longer receive Thunderbird emails since 9-02-24 about 10 AM EST. I talked to the "Head" tech at Optimum and he constantly assured me that the problem was with Thunderbird, not Optimum. I do not receive emails from optimum (suddenlink,net) or yahoo.com. But I can send email, through Thunderbird to each. I have to look on the web to see the emails, since Tbird does not receive. I have changed no passwords. I think that Bird only uses the server on suddenlink, my primary ISP The head tech at optimum sas=ys it it not there problem, Could someone tell me the answer? John Addis jaddis@suddenlink.net john.addis@yahoo.com