It may be the case that you want to send an email to a random number of contacts taken from a particular address book or segment. For example, you might want to send a followup campaign (linking to a feedback survey) to a random amount of contacts who had received a previous campaign; this ensures you get a random selection of responses.
In addition to the example above, you might want to check out our protip at the foot of this article, which outlines using this functionality in relation to campaign testing.
To take a random sample of contacts, use the Take random sample option that is available from the More actions dropdown.
Using 'Take random sample' to create a new address book
Go to Contacts on the navigation bar and select one of either My contacts or Segments from the dropdown menu, as appropriate to your requirements.
Select one or more address books, or one or more segments, then click on More actions and select Take random sample from the dropdown.
The following window will open, and you are asked to select your random sample settings:
Firstly, enter your new address book's name, then select the folder in which you'd like to place the new address book, and lastly choose what percentage of the contacts you would like to take as a sample. This can be done either by using the slider or by entering the figure into the numerical field.
In the example above, 20% has been selected. If the target address book has a total of 500 contacts in it, for example, then the new address book will contain a random sample of 100 contacts.
Click OK to generate the new random sample address book. After its generation, you will find it available and ready to use in the folder location you chose.
Use the functionality to create your control group from an address book or segment. It means that when you run some split tests or a series of triggered campaigns, you can then separate your control group so they don't receive them. This way, when the testing is complete, you can compare engagement, ROI, sharing, etc., between your control group and your tested group. If all goes well, your test group will show the better results and you will know for sure that your tests have added real value.