I have had two email addresses - call them 'therightone@gmail.com' and the 'thewrongone@gmail.com'. When using thunderbird I send an email from 'therightone@gmail.com' it is received as coming from 'thewrongone@gmail.com'. It doesn't do this if sent from Outlook or Gmail. I have even deleted 'thewrongone...' from Thunderbird and yet the problem persists. I has me baffled. I can possibly see that the only solution may be to uninstall TB and reinstall it. Any suggestions are welcome. bernsch