Avoid sending massive emails
 

On my forums, email notification sends me an email for EVERY reply to each thread subscription. So every week, when the weekly notifications are sent, users receive about 30 or 40 emails! Quite spammy.

I think there should be a plugin to merge all the daily and weekly notifications into a single digest.

Thanks.

Is there any option in vBulletin to do this, by the way?

yes, you can send weekly emails or instant..
It's in your vboptions or vb settings in vb4.

I haven't explained well it. I can send weekly emails BUT every week my users will receive one email per each subscripted thread. Some of my users said that they receive about 40 emails per week (using a weekly subscription).

That is insane :\