For high-velocity link building, API-based services (typically around $29 for...

https://www.pop-bookmarks.win/choosing-an-indexing-tool-depends-on-your-content-type-if-you-re-pushing-job

For high-velocity link building, API-based services (typically around $29 for 60 credits) help surface URLs faster. However, for core site content, stick to optimized XML sitemaps and improved internal linking