> ## Documentation Index
> Fetch the complete documentation index at: https://help.lobyco.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Use an imported customer list instead of a segment

> Feed a campaign from a file of customer IDs rather than a segment.

Sometimes the audience is decided outside Lobyco — a list from a partner, a store's own selection, a one-off export. The **Seed** block takes a file of customer IDs as the campaign's input, in place of a Member Segment block.

## What you'll build

```mermaid theme={"system"}
flowchart LR
    A[File of customer IDs] --> B[Seed block]
    B --> C[Split block]
    C --> D[Groups]
```

## Steps

<Steps>
  <Step>
    ### Start a new campaign

    Open the **Campaigns** tab and select **Add new campaign**.
  </Step>

  <Step>
    ### Add a Seed block and set it to file mode

    Upload the file of customer IDs. See [Block reference](/business-documentation/journeys/block-reference).
  </Step>

  <Step>
    ### Add a Split block and connect it to the Seed block

    In this example the imported customers are grouped by age.
  </Step>

  <Step>
    ### Run the campaign

    Wait for the execution to finish, then download the outcome and check the results.
  </Step>
</Steps>

<Info>
  A Seed block replaces the Member Segment block as the campaign's input — it does not sit after one.
</Info>

## Related

* [Split a segment into groups](/business-documentation/use-cases/split-a-segment-into-groups)
* [Reuse a previous campaign's results](/business-documentation/use-cases/reuse-a-previous-campaigns-results) — the other Seed block mode
* [Block reference](/business-documentation/journeys/block-reference)

<Info>
  **Migration note.** Rewritten from `Segmentation > User exercises > Import file with members ids for campaign configuration`.
</Info>