alt Hacker NewsThat's the thing a lot of people don't understand about email. Delivery is not guaranteed. And neither is notification about failed delivery. Bits can just fall on the floor somewhere and you'll never know.
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edoceo • today at 3:52 PM
I know of one regulator in USA (WSLCB) that sends critical and time sensitive notifications via email only. Has had delivery problems for at least five years and cannot see the flaw in their system.
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That is technically true for any communication method. In practice, email is extremely reliably except for deliberate decisions to drop mail. You can literally shut down your mail server for days and some time after you boot it back up you'll get all the mail people have been sending during that time. What other protocol gives you that reliability without complex failover infrastructure.