It should be possible, I also do this. Maybe there is an old plugin installed. I did a search on the forum and found these steps, maybe you can try them: Manually reinstall Apple Mail Plugin - HowTo? - #4 by BLUEFROG
It should be possible, I also do this. Maybe there is an old plugin installed. I did a search on the forum and found these steps, maybe you can try them: Manually reinstall Apple Mail Plugin - HowTo? - #4 by BLUEFROG