If an e-mail is sent to more than one target groups, it is necessary to check the two target groups for duplicates. Only then it is guaranteed that each user only receives one e-mail.

At Addresses > Doublet Filter you can select two or more target groups which are supposed to be compared to each other.

By using the doublet filter tool all overlaps of different target groups can be calculated, saved or excluded. The base for the matching is the client-specific unique attribute (default: email; alternative: client number/custID).

In the example shown here three target groups shall be compared to each other. First the order of alignment has to be set. To do so, move the elements via drag&drop into the right position. On top of the list has to be the target group which represents your base. The target groups below are filtered out of the top one.

With the button Calculate doublets the respective duplicate-free amounts are computed. The column Over all target groups shows the total amount of addresses in the original target groups. The column Contained in previous set lists all doublets, while the column NOT contained in previous set displays the duplicate-free amount.

All grey areas can be saved as a target group which can then be found at Addresses > Lists. When saving the target groups you have the option to limit them. To do this, enter any subset of the generated target group amount in the field provided. The limitation is carried out on a random base of addresses.

Stored target groups are marked green.