USE CASE:
The real work behind newsletter detection for Threads creators
Everything below is about one job: newsletter detection for Threads creators, done in a way that survives a list rather than a single lookup. Mamba Labs builds the Apify actors named here, so Link in Bio Newsletter Checker is something you run yourself against your own list of Threads creators.
Last updated October 6, 2026
The problem
Threads creators frustrate newsletter detection, for a reason specific to them. Threads creators mostly carry an audience over from Instagram rather than one they built on the platform, and newsletter detection inherits that. On Threads creators, newsletter detection rarely catches this: a large Threads following often mirrors the Instagram account and adds little reach of its own. There is 1 runnable example of newsletter detection for Threads creators below.
Why it matters
The signal on Threads creators sits one click behind the profile, which is exactly where nobody keeps looking at volume.
Doing it end to end
- Start with one of Threads creators you already know, so a wrong newsletter detection answer is obvious rather than plausible.
- Run Link in Bio Newsletter Checker across your list of Threads creators, which carries 1 ready made setup for newsletter detection.
- Read ten rows of newsletter detection on Threads creators by hand before you trust the rest of the list.
Traditional Search Tools
- The linked Instagram profile, for Threads creators. Free, and comparing the two shows how much of the audience is new.
- Substack and beehiiv discovery pages. Each platform lists its own writers by category. Free, and blind to every creator on a different platform or a self hosted list.
- SparkLoop and newsletter ad networks. They know the newsletters in their own network, with audience sizes. The network is the boundary, and most creators are outside it.
- Asking the creator. The answer is accurate and the list size is often generous. It takes a conversation per creator, which is exactly what a list was meant to avoid.
- Click through every link page. Open the link in bio for each creator and look for a signup form or a link to Substack, beehiiv or Kit. Note the platform. Two to four minutes a creator, longer when the link page needs a browser to load.
Mamba Labs Apify Actors
These are the actors we built for this job. If yours is not covered here, search from the bar at the top of the page or contact us here and tell us what you need.
- Link in Bio Newsletter Checker1 preconfigured task on this page's job.