I have used Juno for one of my email accounts since it was first introduced in the 1990s. More recently, I have learned to use Juno's POP and SMTP servers, however in recent years some issue developed between Juno and Mozilla/Thunderbird, wherein TB will not place a message sent through Juno in the Sent or Drafts folder (as applicable) on the Juno server(s), forcing TB to use separate local folders instead. For incoming mail, I use server pop.juno.com on port 995 with SSL/TLS security and encrypted-password authentication. For outgoing mail, I use server smtp.juno.com on port 465. Every time I send mail, the following messages appear: ''There is not enough disk space to download new messages. Try deleting old mail, emptying the Trash folder, and compacting your mail folders, and then try again.'' which is inaccurate, given I have a considerable-sized hard drive (500 GB), plus multiple USB drives with much more space... then comes: ''Your message was sent but a copy was not placed in your sent folder (Sent) due to network or file access errors. You can retry or save the message locally to Local Folders/[email protected].'' with the choice of buttons Retry, Save, or Don't Save. ''Please do something about this, or tell me what I need to do to ensure that the messages go to where they're supposed to go. Thanks.''