First Select Contacts from the Menu (note if you have not created your campaign yet you will need to do so before adding your contacts)

Next Select the active contacts filter

From here select the contacts you would like to add to your campaign. You can select all contacts, all contacts in the current view, or select them individually. You can also filter contacts by tags using the search tags field.

Once you have selected your contacts select the Add Contacts to Campaign button.

Next, select the Add button next to the campaign you want to add your contacts to, then select the close button at the bottom.

The contacts will now start showing up in your campaign's contact list. If you added a large number of contacts to your campaign in may take a couple of minutes before all of your contacts show up. You may need to refresh your browser as well. Once all your contacts have loaded you can proceed to send your message.
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