Choose your list source by starting with what you already have and what you want the list to do next. If you begin with the source name alone, it is easy to pick something too broad, too narrow, or not available in your workspace.
Ask two questions first: What input do you already have, and do you need a fixed one-time list or an ongoing stream of new matches?
In short: Choose the source based on your current input and the list behavior you need. Use uploads for existing datasets, discovery sources for new matching companies or people, and recurring sources when Signalist should keep monitoring for new matches.
Use the following guide to select a source family. Names and availability can vary by workspace, so use the current create-list flow as the final reference.
Tip: Do not start by choosing the most powerful source. Start with the smallest source that fits your goal, then increase scope only after the first sample looks correct.
| Starting point | Best-fit source family |
|---|---|
| You already have a file with people, companies, or job titles | Use an upload-based source. Check the required columns and prepare a small test file before importing the complete dataset. |
| Another system will send records to Signalist | Use a webhook or another supported incoming source, if it is available in your workspace. Confirm the expected fields and authentication before sending customer data. |
| You want to work from activity on a LinkedIn post, profile, or company page | Use the matching LinkedIn activity source. A connected account or additional permissions may be required. |
| You want to discover accounts that match defined criteria | Use a lead database or AI Company Search where available. Start with narrow criteria and review a sample before expanding the search. |
| You want a list to update when a business event occurs | Use an appropriate recurring signal source, such as custom signals, jobs, funding, M&A, re-engagement, or trackers, where available. |
| You already track companies or people and want to act on new changes | Use the relevant tracker-based workflow where available, and define which changes are relevant before adding records to outreach. |

Choose a one-time source when the input is fixed and you want to process it once. Typical examples include a prepared upload or a defined set of LinkedIn activity. Use this approach when you need a controlled dataset that will not automatically add new matches.
Choose a recurring source when Signalist should continue looking for new matches or changes. Recurring sources can be useful for monitoring jobs, funding, M&A, re-engagement opportunities, custom signals, or tracker activity where those options are available.
Recurring does not mean unrestricted. Define relevance criteria, limits, exclusions, ownership, and a review routine before using new matches in downstream workflows.
Important: Recurring sources can keep adding new records over time. Always set relevance criteria, exclusions, limits, and an owner before connecting the list to outreach or another downstream workflow.


A short sample review is usually faster and safer than cleaning up a large, unsuitable list after it has entered another workflow.
Ready to continue? Proceed only when the sample matches your target audience, the source type is correct, required permissions are available, and someone is responsible for reviewing the list.

| Problem | Solution |
|---|---|
| You cannot find the expected source or tracker | Confirm that you are in the correct workspace and that the feature is enabled for your plan or role. Ask a workspace administrator if you are unsure. |
| A source is visible but unavailable or disabled | Check prerequisites such as connected accounts, permissions, supported input, or required configuration. Do not work around a disabled control with customer data. |
| A recurring source returns too many irrelevant matches | Narrow the criteria, add exclusions, reduce the initial limit, and review a new sample before continuing. |
| Signalist asks for an account or permission you do not have | Stop the setup and ask the appropriate workspace owner or administrator to grant the required access. Never share credentials or API keys in a list description. |
| You are unsure whether to use discovery or upload | Use upload when you already have a defined dataset. Use discovery when Signalist needs to find matching companies or people from criteria you provide. |
LinkedIn activity can help you build timely lists from profile visits, followers, events, posts, engagement, or prepared LinkedIn URLs. Use the source that matches the specific signal, then qualify the people before you treat them as outreach candidates.
Use AI Company Search to describe target companies in natural language, and use news or signal monitoring to watch for specific events. Both work best when your prompt is verifiable, your exclusions are explicit, and each result has a defined review or follow up action.
Use an XLSX upload when you already have a defined set of people, companies, or job titles. A clean file and a careful preview help Signalist match the right records and reduce avoidable duplicates, credit use, and manual correction.