[Observium] Disable alert reminders being sent

Hi there,

I'd like to set up Observium's alerts so that we only receive 1 alert email, and no more are sent even if the alert condition persists.

I've set the following in config.php but I am not sure if it will give the desired effect:

$config['alerts']['interval'] = 0;

Is this the correct way to achieve this? Are there any further steps that need to be taken?

Many thanks

Oliver Baker