As you were told in your previous two threads like https://support.mozilla.org/en-US/questions/1453607 Thunderbird is a email client installed on your Windows system as It is '''Not''' a server or email service. Perhaps your email provider(s) is having issues so you need to find out from them. Your provider would be the one after the @ like for example @gmail.com @comcast.net @yahoo.com etc. Also this is a public community forum and nobody here will be calling or texting you at some random posted phone#. So you know, to reply in a forum thread that is not locked, scroll down to the '''Post a Reply''' box, then type in your reply, then click on the '''Post Reply'''. Locking this one as we do not need yet another thread asking the same question.