You can trigger the system double opt-in confirmation to an individual contact by manually changing their opt-in type, or, you can send a standard campaign containing a double opt-in link to a list or segment of contacts who don’t have the email opt-in type Verified double.

Set an individual contact’s email opt-in type to Verified double

When you manually change the email opt-in type of an individual contact to Verified double, they are sent your selected double opt-in confirmation email to confirm this status.

To change an individual contact’s opt-in type:

Go to Audience > Contacts.
Select the contact whose opt-in type you want to change. You can use the Search field to locate the contact.
Select the Data fields tab.
For Email, select Subscribed.
In the side panel, select the radio button for Verified double.
Select APPLY.
Read the information in the side panel, then select SAVE AND SEND EMAIL.

The double opt-in confirmation email is sent to the contact, and their email address is temporarily removed from your lists and stored in the Pending contacts area until they confirm their opt-in using the link in the confirmation email.

After a contact has confirmed their opt-in, their email address is added back to your lists with their email opt-in type updated to Verified double.

Send a campaign with a double-opt-in link to a list or segment

If you want to offer a group of contacts the opportunity to confirm their email opt-in, you can create a standard campaign which contains a double opt-in link, and send this to a list or segment which contains these contacts.

Learn more in the section Add a double opt-in link.

One way to do this is to create a segment which identifies all of your contacts who do not currently have the email opt-in type Verified double.

To do this:

Create a new segment.
In the segment builder, drag a Data fields block into the Include contacts that match all the rules in this group dropzone.
Select [click to select a datafield], then select Email.
Expand the drop-down menu and select is not empty, then select OK.
Drag a Data fields block into the Exclude contacts that match all the rules in this group dropzone.
Select [click to select a datafield], then select Email channel opt-in type.
Expand the drop-down menu and select Verified double.
Select SAVE.

This segment now contains all of your contacts for whom you hold an email address, who do not have the email opt-in type Verified double.

You can send an email campaign containing a double opt-in link to this segment, and each contact that confirms their opt-in has their Email channel opt-in type contact data field updated to Verified Double.

If you want to, after a period of time, you can refresh the segment you created to check how many remaining contacts have chosen not to confirm their opt-in. You can then remove these contacts from your account.