I'm currently working on a project where an email will be re-sent roughly once a month, but due to the number of contacts, I would like to spread this out. I would ideally like a quarter of the leads to be sent each time, and would like any leads that have been emailed in the past 30 days to be excluded.
In the past, we have achieved this by using a static list, which is then split into four lists using a smart campaign. Four other smart campaigns are used to then manually trigger the email send to each of the split lists. This is quite time consuming, as all the lists need to be reconstructed manually each time (to add in new customers), and the emails have to be manually sent.
I'm just wondering if there is an easier way of doing this that allows the process to be fully automated.