User-Agent: Opera/9.62 (Windows NT 5.1; U; cs) Presto/2.1.1 Build Identifier: alwayslast stable Nice new feature would be detecting of language of message during clicking to "Reply" detect language of message by a few first words - and then switch spell check to right language. 2) Previous feature could be connected with identities and signatures of account. I often write messages in more than one languages from the same account and I need different signatures. But manual switching of accounts in header is boring. There would be added some choice which language should be used for each identity. Then signature could be switched automatically during clicking "Reply" button. Amazing!!! Isn't it? Reproducible: Always