I confess. I've been using the Infopop software for nine months now, but finally figured out how to subscribe to threads or certain posts. See below if you are interested....hope this helps.
Can I be notified by email if someone responds to my topic?
If you create a new topic, you have the option of receiving an email notification every time someone posts a reply to your topic. Just check the email notification box when creating a new topic, if you want to use this feature. Only registered members can use this feature.
Can I get email notification of replies to topics I'm interested in?
Yes, you may. When making a full reply to a topic, check the "Email Notification: emails sent to you whenever someone replies." option, located below the Instant Graemlins / Instant UBB Code� boxes.