Re: E-mail is unreliable in any case
Or the more usual, oh I just found them in my Spam folder!!
Anyone who runs their own mailserver in this day and age is mad as a hatter. I've been on the wrong end of a large Exchange Server meltdown, that took two weeks to get back to normal, it wasn't pretty and after working an 80 hour week to get it working the client still haggled over the bill and took six months to pay it. No they didn't have an SLA or even a maintenance contract on it.
Everyone I deal with now uses GAW, Office365 or MessageStream, I can have a holiday, sickday and can get hit by a bus safe in the knowledge that if there is an issue it's either between the chair and the keyboard or someone's working on it already.