I&#x27;m slowly switching from OS X 10.9.5 (Mavericks) to PC-BSD.<p>When Thunderbird doesn&#x27;t work as expected, I might occasionally use Mulberry.<p><a href="http:&#x2F;&#x2F;www.freshports.org&#x2F;mail&#x2F;mulberry&#x2F;" rel="nofollow">http:&#x2F;&#x2F;www.freshports.org&#x2F;mail&#x2F;mulberry&#x2F;</a> – neither a maintainer nor official support but still, it&#x27;s fast and powerful.