A CSV import is a snapshot: it brings people in once. A connection keeps flowing. WP Sync is the ResultsAiX connection plugin. It links 150+ apps and services, such as autoresponders, carts, forms and webinar tools, and moves contacts between them automatically.
With WP Sync on the same site, any of those apps can pour new subscribers straight into your Mailer lists, and a backfill brings in everyone already on the source list.
Where to find it:

Go to Audience, then Imports. The Sync from anywhere panel shows one of three states:
- WP Sync is not installed: a short explanation and a Get WP Sync button.
- WP Sync is installed but has no connection to the Mailer yet: a Create the connection in WP Sync button.
- Connections are ready: a Connection picker, a Run backfill now button and a Manage in WP Sync button.
Setting up a connection:
- Install and activate WP Sync on the same site as the Mailer.
- Go to Audience, then Imports, and click Create the connection in WP Sync.
- In WP Sync, create a connection with any app as the source and ResultsAiX Mailer as the destination.
- Point it at one of your Mailer lists.
- Come back to Imports. The connection now appears in the Connection picker.
From then on, every new contact on the source flows into your Mailer list automatically.
Bringing in everyone already on the source:
- On Audience, then Imports, choose the connection in the Connection picker.
- Click Run backfill now.
- Each run brings in up to 2,000 people. Click it again for the next 2,000 until everyone is across.
Running it twice never duplicates anyone, so it is safe to repeat.
How synced people are treated:
Contacts that arrive through WP Sync come in silent. They can receive broadcasts you send, but they never start a sequence or automation by themselves and never get a welcome email. That keeps a big sync from emailing thousands of people by accident. See The Silent Import Lock.
The Reports screen counts them as their own source, WP Sync, in Where new subscribers came from.
A real example:
Anna runs her spring planting webinar on a separate webinar platform. She connects that platform to WP Sync, with ResultsAiX Mailer as the destination and the list Webinar: Spring Planting Live. New registrants now land on that list within minutes. She clicks Run backfill now once to bring across the people who registered before the connection existed, and the backfill reports how many were added.
Tips:
- Use a CSV import for a one-off move and WP Sync for anything that keeps changing.
- Name each connection clearly in WP Sync, so the Connection picker is easy to read.
- Imported people stay silent. To welcome them, send a broadcast, or lift the lock for that list on the Lists tab.
- For a one-time import from a file, see Importing Subscribers From A CSV.