In my case, we're VC backed, heads down working on product. I love rolling my own for most infrastructure, but when you get into managing groups, aliases, passw

In my case, we're VC backed, heads down working on product. I love rolling my own for most infrastructure, but when you get into managing groups, aliases, password changes, SPF, DKIM, Webmail etc... for 30+ people, it quickly becomes a major time suck. I strongly believe in spending reasonable money to outsource anything like this. This of course assumes you aren't worried about Google/M$ reading every email and stealing your trade secrets... Puts on tinfoil hat