It's can't found contact sidebar option on 1.4pre Rated 4 out of 5 stars

I have install contact sidebar 1.4pre at TB10.But I can't found contact sidebar option.Please fix it.

Could support TB 6? Rated 4 out of 5 stars

The TB6.0 already release.Could support it??

I hope support thunderbird 5 Rated 4 out of 5 stars

Could support thunderbird 5?? I already to test it.Thanks a lot.