For the past 3 years I have not been able to send emails using either "@me.com" or "@icloud.com". All other providers such as "@gmail.com" and "@outlook.com" work perfectly. The only exception to this is when an email sent to me using my account name can it be used to respond. I assume therefore that there is an error in my settings for the SMTP server are wrong. The SMTP server settings allowed in the TBird settings are as follows: Description: user choice (I have tried my forename and the word "Apple" - no difference) Server name: smtp.mail.me.com or smtp.mail.icloud.com (either should be accepted) Port: 587 or 465 Connection security: None, STARTTLS, or SSL/TLS Authentication method: No Authentication, Normal password, Encrypted password, Kerberos/GSSAPI or NTLM user name: my name (my name) The message I get when I try to send a email with any combination of the above is "Login to server imap.mail.me.com with username xxxxxxxxxxxx failed." I have other accounts listed in TBird. None of them have this issue. Both Firefox and Thunderbird are up to date (115.31.0 for FF and 115.18.0 for TB) Can you please advise me on this. It has been an issue for the 3 years or so. As I use the Apple account for family members only it is particularly frustrating!