Recently - for no apparent reason I have been unable to send mail . Message just asks me to enter the password for this account which it perpetually rejects. I have tried entering past passwords for my email account and the master password. I have tried the following: Deleting master password and resetting it using the Error console Checking that SMPT settings are right (ie as per my email provider on webmail) Uninstalling and reinstalling Thunderbird disabling my antivirus etc software

Nothing works. Can anyone help.