Inactive subscribers are the recipients who have not opened any email campaigns you have sent or the contacts that haven't confirmed their consent when a double opt-in form was used. 

What to Do With Inactive Subscribers?

We suggest removing inactive subscribers periodically to keep them from receiving emails that they clearly do not wish to receive (but have yet to unsubscribe themselves from the list).

To remove inactive subscribers:

First, create a segment of the lists from which you wish to remove inactive subscribers. For more information about how to create a segment, see the support topic How to Create a Segment

Second, select an Activity Filter and choose the option “not opened” and “date range”

Third, specify a time for the date range. We recommend 6 months, but you can choose whichever date range you want.​

Finally, visit your segments by selecting the Segments option from the Contacts menu. Click on the checkbox on the left side of the segment to select all users and click on the Unsubscribe icon.

Re-sending Confirmation Email

The contacts who use a double opt-in form, receive a confirmation email, but the confirmation link is only valid for 24h. If the link is not working anymore or the subscriber hasn't received the email for any other reason, you can resend the email.

Go to your list and open Inactive section,

Check the status of the contact:

• If it states Too early to resend —  you have to wait when the current confirmation link expires to resend the email (confirmation link expires in 24h).

• If it states Too old to resend — you will have to delete the contact from the inactive section and add it again.
• If you can resend the email, you will see an arrow icon that states Resend activation request. Click on the icon to resend the email.