All of the threshold rules that are defined under System->Action Rules->Thresholds are listed above. For each threshold, you may elect to send an email upon occurrence of true, false, or both. Then select which of the recipients are to have this email sent to them. From one to all may be selected.

Use caution when turning on automatic email generation. A threshold without hysteresis and/or minimum times associated with it can easily generate several emails per second if the measured parameter is hovering around the threshold limit.

Expect Ack means i.CanDoIt will check incoming email to see if the event notification email was replied to by the recipient, and with the proper acknowledgement code in the message. If an acknowledgement is received, repeating will be cancelled to all recipients.

The acknowledgement code expected in the incoming reply will be given in the outgoing notification email. A typical notification code will look like this: !08052012R1! and must be included in the reply in exactly the same form including the exclamation points. Simply clicking "Reply", then "Send" in Outlook will do the job since the original message with acknowlegement code is automatically included in the reply.

Repeat time is the rate at which the email will be repeated and is given as D,HH:MM for days,hours:minutes. There should be no embedded spaces between days and hours, only a comma. If set to zero (and just a single "0" will suffice), repeating will be disabled. Emails are only repeated for Notify on True; they will never be repeated for Notify on False (unless the threshold rule goes true, then false, for a second time).

System start-up is a special case. It is a pre-defined event, and will only be repeated if Expect Ack is checked. If unacknowledged, it will not be repeated (repeat time will be disregarded).