[mattbgates]

Disabled by default, but send a welcome email explaining to your users that they can enable this option to be alerted. For existing users, you can either send them an email or leave up a notification that they can close out, but read about those new changes. Depending on your app and if it is paid, you could also add in a text message feature, to be alerted.

Also give the option for a "per error" or "per error digest" and the digest will capture the last 10 errors and send them by email all at once. There could be some users who want to be alerted every time, but not giving them an option for anything else will make them not want to use it, so to at least be able to adjust the amount of emails is a far better option to get people actually using the feature.