Reminds me of GApps. First it was free (without support) for 50 users, then 10, now the free option is gone and they aren't even competitive if you just want quality personal or family webmail @yourdomain.com

If you're in the market for a certificate I'd jump on board now before it sails, and you're left 'stuck' with whatever automated hoop-jumping crapola Mozilla wheel out in 2 months.