User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.3.1) Gecko/20030425 Build Identifier: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.3.1) Gecko/20030425 If you have one filter which labels (for example) the mails that come from anyone you have in your personal adress book and that person sends you the email through his email account you have as Secondary email, the email isn't filtered Reproducible: Always Steps to Reproduce: 1.Create a filter: if sender is in my adress book: Personal adress book --> Label the email as Personal 2.Add a new person to your Personal adress book and fill both, primary and secondary email 3.Send a email from the secondary email account you've just added(additional email) to the account you're filtering Actual Results: The e-mail isn't filtered Expected Results: Label the email --Classic Theme--

No bug in 1.4