Starting March 30th, 2016, we no longer allow users to save unopens as a list within Benchmark. This is to prevent abuse by spamming contacts, using the Benchmark Email system. A lot of email recipients do not like to receive the same email twice. However unopens are still important and you can still export unopens as an Excel file, or a Comma Seperated Value (.CSV) file for your own records. You may upload this list to send to if you wish.
Other methods to resending to unopens, or rather non-engaged contacts, is with the tool Targeted Emailing. With Targeted Emailing, our system will be able to compare multiple campaigns together and generate a list of engaged or non-engaged contacts for you to send a different or same email to.
Last but not least, you can also resend to unopens once, using our resend option. Please see this FAQ: How do I resend my email to my Unopens? Keep in mind that you can only resend the same campaign once, and after 48 hours from when the original was sent.