Filtering your spreadsheet into segments is a simple way to follow-up on certain recipients or avoid resending emails to your list.
When your filter is on, you can play with options to target a specific audience. Filter allows you to show only the records you want to send emails to. To turn the filter off, click Data > Turn off filter.
Here is a step-by-step guide to engage back with recipients who have not taken action yet with your first email:
Filter your spreadsheet as shown above
Select the "Merge status" column and untick all status except "Emails opens". This will keep rows for recipients who have opened your email but did not click it yet
Open Mailmeteor and send a new campaign. It will create a new "Merge status" column next to the first one. You can monitor all your campaigns under the Tracking report.