Colleagues, I've modified the text of the Probe1 template in anticipation of using it to send a monthly message to list subscribers. Here are my list headers before setting up the Probe1 template with the new language: Auto-Delete= Yes,Full-Auto,Delay(4),Max(100),Probe(30) Renewal= No My understanding after reading the manual is that in order to institute active probing, I would need to set the headers as follows: Auto-Delete= Yes,Full-Auto,Delay(4),Max(100),Probe(30) Renewal= 1/1,2/1,3/1,4/1,5/1,6/1,7/1,8/1,9/1,10/1,11/1,12/1,Probe In other words, my understanding is that the Renewal header is the one that institutes active probing, and that the "Auto-Delete" header sets passive probing. The thing is, I just realized that another list of mine, which has the following headers, is sending out active probes (which is why I'm now questioning whether I really understand this or not): Auto-Delete= Yes,Full-Auto,Delay(3),Max(10),Probe(30) Renewal= no I'd be appreciative if someone could clarify how to institute active probing so that the Probe1 template is sent out on a monthly basis.... Thanks in advance. Steve Stephen C. Nill, J.D. Founder & Chief Executive Officer [log in to unmask] <http://charitychannel.com/>CharityChannel.com - The Conference That Never Sleeps (tm)