Replace broken links with your page

The problem

Site owners ignore cold link requests.

Steps

1. Find pages in your niche with outbound links that return errors.
2. Check what the dead page covered, using an archive.
3. Make sure you have a page that genuinely replaces it.
4. Tell the owner about the broken link and offer your page.

Evidence

The broken link gives you a reason to write, but the bottleneck is the same as with any outreach: someone has to be maintaining the page.