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  • I have to assume that little orange triangle is an indication, since I discovered days later that some of my mail messages didn't go, but it would certainly be helpful if there were a way to know WTF happened.

  • You can activate the lofile for sending mails.

    • Open %LOCALAPPDATA%\Opera\Opera\mail\accounts.ini
    • Find the sction of problematical mail account by sarching the line Account Name= with your senders mail address
    • Insert the line
      Outgoing Log File=C:\outgoing-mail.log
      Outgoing Log File={Home}Desktop/accountN_outlog.txt
      to store the log (you may enter a path to your documents folder instead of C:\ !) see
      But stay secure, delete the line after knwoing the problem. Why? Passwords are logged in clear text in the file!
  • You can also add the lines below to operaprefs.ini:

    [User Prefs]
    Console Error Log Enabled=1

    This way the errors will be logged and you can check what is happening.

  • Also, in the account's properties, retype your username and password for the outgoing server. Make sure you have TLS checked and are using port 465 or 587. Set Authentication to auto.