Lisa_Docter

Hi Lisa, No worries - as far as I'm concerned, you've got three options to consider: 1. Create new emails in the new templates and replace existing content. Leads within the stream will receive all the new content - whether they've previously received it before or not. 2. Duplicate the nurture program. Update the content to feature the new template and replace this within each stream. Deactivate the smart campaigns for the original nurture and activate them for the new. The new nurture must have an exclusion in the Smart Campaign that basically says "Don't add people who exist in the old program". This way, only leads going forward receive the new emails in the new template - those who existed in the original program will continue to receive the remaining original emails. 3. Create a default program for each email within your Engagement Program. Run a smart campaign that basically says "If a person was sent Email ABC, make them a member of Program for Email ABC". Create a new email in the new default program. Add the default program to the stream. People who previously received the original email will be skipped as they are a member of the default program. People who have not received it will receive the new email.  Nested engagement programs (like option 3) are a great way to capture reporting. Joe Reitz has a really good video explaining this (Marketo-Fu - Episode #38: Engagement Program Best Practices - YouTube ) and there's a really good thread you can read more on the community ( https://nation.marketo.com/thread/46624-nurture-ahem-engagement-programs-best-practices ). I hope that helps clarify things, but reach out if you need further insight. ... View more