[Freeswitch-users] Debian, FreeSWITCH, and email

I'm setting up a new system to replace our previous one (which was FreeSWITCH 1.4.15 on CentOS 6.6) to a better supported configuration (latest FreeSWITCH on Debian jessie). I'm getting to the part where I'm configuring email, to be used by FreeSWITCH voicemail notifications, the LUA freeswitch.email function, and future FAX support (assuming I can get it to receive FAXes dependably so I can get rid of my POTS FAX line). I found that exim4 comes with Debian, but I also found a (old) warning in https://freeswitch.org/confluence/display/FREESWITCH/mod_voicemail talking about potential problems, that may have been fixed. So I was wondering if I should use exim4, or install postfix. Any opinions? -- Steve