User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.6) Gecko/20040206 Firefox/0.8 Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.6) Gecko/20040206 Firefox/0.8 Filenames with unicode characters are not supported by thunderbird. It seems ok until sending the mail, then an error occurs: Unable to open the temporary file foobar. Reproducible: Always Steps to Reproduce: 1. 2. 3. Expected Results: As long as thunderbird doesn't support these filenames, I'd expect an error when specifyinf the attachment. Better still: implementation of this feature.

See bug 234681, bug 162361, and bug 172337. Do these bugs cover this request?

*** This bug has been marked as a duplicate of 240002 ***