Removing the limits on subscribed emails between board visits

When emails are sent out from subscribed forums (have added the Forum Subscription mod), the email message states, "There may be more new replies, but this is the only notification you will receive until you visit the board again." ...And that is exactly how it does work, but I don't want it to do that.

Where can I modify this so that emails will be sent even if I haven?t been able to visit the board?

Also, I still want the board to show new posts since my last visit.

Thanks in advance, RICK