Broken Link Checker/Report

Broken Link Report for buttondown.com

38 broken links found across 1500 crawled pages.

Checked 8/24/2026 63 views 46 days ago
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Site link health

Partial scan

The crawl reached the 1,500 page free-tool limit. The counts below cover the checked portion of the site.

Highest leverage

The top 3 internal destinations account for 3 referring page references.

1500

Pages crawled

1000

Links checked

12

Broken internal

26

Broken external

Repair queue

Broken internal links

Prioritized by how many referring pages point to each broken destination.

12 destinations
Normal

https://buttondown.com/buttondown-examples

Isolated content link 1 referring page
404 HTTP 404

Affected pages

  • https://buttondown.com/changelog

Anchor text: example

Likely issue type

Isolated content link

This looks like a single page-level link. Fix the referring page after higher-reach issues are handled.

Likely action

Check whether the destination moved, was deleted, or should redirect. Update the source link to the live canonical URL when possible.

Normal

https://buttondown.com/changelog/2024-10-09

Isolated content link 1 referring page
404 HTTP 404

Affected pages

  • https://buttondown.com/changelog

Anchor text: Fancy Mode

Likely issue type

Isolated content link

This looks like a single page-level link. Fix the referring page after higher-reach issues are handled.

Likely action

Check whether the destination moved, was deleted, or should redirect. Update the source link to the live canonical URL when possible.

Normal

https://buttondown.com/changelog/2026-03-14-littlefoot

Isolated content link 1 referring page
404 HTTP 404

Affected pages

  • https://buttondown.com/changelog

Anchor text: littlefoot

Likely issue type

Isolated content link

This looks like a single page-level link. Fix the referring page after higher-reach issues are handled.

Likely action

Check whether the destination moved, was deleted, or should redirect. Update the source link to the live canonical URL when possible.

Normal

https://buttondown.com/features/automations

Isolated content link 1 referring page
404 HTTP 404

Affected pages

  • https://buttondown.com/changelog

Anchor text: Zapier

Likely issue type

Isolated content link

This looks like a single page-level link. Fix the referring page after higher-reach issues are handled.

Likely action

Check whether the destination moved, was deleted, or should redirect. Update the source link to the live canonical URL when possible.

Normal

https://buttondown.com/features/custom-buttons

Isolated content link 1 referring page
404 HTTP 404

Affected pages

  • https://buttondown.com/changelog

Anchor text: custom buttons

Likely issue type

Isolated content link

This looks like a single page-level link. Fix the referring page after higher-reach issues are handled.

Likely action

Check whether the destination moved, was deleted, or should redirect. Update the source link to the live canonical URL when possible.

Normal

https://buttondown.com/features/custom-domains

Isolated content link 1 referring page
404 HTTP 404

Affected pages

  • https://buttondown.com/changelog

Anchor text: hosting, domains, custom domains

Likely issue type

Isolated content link

This looks like a single page-level link. Fix the referring page after higher-reach issues are handled.

Likely action

Check whether the destination moved, was deleted, or should redirect. Update the source link to the live canonical URL when possible.

Normal

https://buttondown.com/features/firewall

Isolated content link 1 referring page
404 HTTP 404

Affected pages

  • https://buttondown.com/changelog

Anchor text: firewall, Firewall

Likely issue type

Isolated content link

This looks like a single page-level link. Fix the referring page after higher-reach issues are handled.

Likely action

Check whether the destination moved, was deleted, or should redirect. Update the source link to the live canonical URL when possible.

Normal

https://buttondown.com/features/portal

Isolated content link 1 referring page
404 HTTP 404

Affected pages

  • https://buttondown.com/changelog

Anchor text: portal

Likely issue type

Isolated content link

This looks like a single page-level link. Fix the referring page after higher-reach issues are handled.

Likely action

Check whether the destination moved, was deleted, or should redirect. Update the source link to the live canonical URL when possible.

Normal

https://buttondown.com/features/rss-to-email

Isolated content link 1 referring page
404 HTTP 404

Affected pages

  • https://buttondown.com/changelog

Anchor text: RSS, RSS-to-email, RSS feed

Likely issue type

Isolated content link

This looks like a single page-level link. Fix the referring page after higher-reach issues are handled.

Likely action

Check whether the destination moved, was deleted, or should redirect. Update the source link to the live canonical URL when possible.

Normal

https://buttondown.com/features/snippets

Isolated content link 1 referring page
404 HTTP 404

Affected pages

  • https://buttondown.com/changelog

Anchor text: snippets

Likely issue type

Isolated content link

This looks like a single page-level link. Fix the referring page after higher-reach issues are handled.

Likely action

Check whether the destination moved, was deleted, or should redirect. Update the source link to the live canonical URL when possible.

Normal

https://buttondown.com/glossary-dmarc

Isolated content link 1 referring page
404 HTTP 404

Affected pages

  • https://buttondown.com/changelog

Anchor text: DMARC

Likely issue type

Isolated content link

This looks like a single page-level link. Fix the referring page after higher-reach issues are handled.

Likely action

Check whether the destination moved, was deleted, or should redirect. Update the source link to the live canonical URL when possible.

Normal

https://buttondown.com/security

Isolated content link 1 referring page
404 HTTP 404

Affected pages

  • https://buttondown.com/changelog

Anchor text: /security

Likely issue type

Isolated content link

This looks like a single page-level link. Fix the referring page after higher-reach issues are handled.

Likely action

Check whether the destination moved, was deleted, or should redirect. Update the source link to the live canonical URL when possible.

External links requiring review

External sites can block automated requests. Verify unexpected failures before removing or replacing a link.

https://bsky.app/profile/buttondown.com

External failure to verify 3 referring pages
404 HTTP 404

Found on

  • https://buttondown.com
  • https://buttondown.com/about
  • https://buttondown.com/blog

https://support.google.com/a/answer/81126?hl=en

External failure to verify 3 referring pages
404 HTTP 404

Found on

  • https://buttondown.com/blog/cadence-deliverability
  • https://buttondown.com/blog/email-list-cleaning
  • https://buttondown.com/blog/migration-explained

https://fossfunders.com/

External failure to verify 3 referring pages
503 HTTP 503

Found on

  • https://buttondown.com/stack
  • https://buttondown.com/blog/share-your-complements
  • https://buttondown.com/open-source

https://bluesky.social/

External failure to verify 2 referring pages
Unknown Connection failed

Found on

  • https://buttondown.com/blog/2024-09-01
  • https://buttondown.com/changelog/2024-09-01

https://bluesky.social/about

External failure to verify 2 referring pages
Unknown Connection failed

Found on

  • https://buttondown.com/blog/2024-09-01
  • https://buttondown.com/changelog/2024-09-01

https://docs.mailbrew.com/api/reference/subscribers

External failure to verify 2 referring pages
Unknown Connection failed

Found on

  • https://buttondown.com/blog/2025-07-04
  • https://buttondown.com/changelog/2025-07-04

https://www.stopforumspam.org/

External failure to verify 2 referring pages
Unknown Connection failed

Found on

  • https://buttondown.com/stack
  • https://buttondown.com/open-source

https://bsky.app/profile/destinytoro.com

External failure to verify 2 referring pages
404 HTTP 404

Found on

  • https://buttondown.com/blog/destiny-toro
  • https://buttondown.com/TORO/archive/december-newsletter

https://cloud.google.com/web-risk

External failure to verify 2 referring pages
404 HTTP 404

Found on

  • https://buttondown.com/stack
  • https://buttondown.com/open-source

https://zapier.com/apps/thinkful/integrations

External failure to verify 2 referring pages
404 HTTP 404

Found on

  • https://buttondown.com/blog/2024-08-22
  • https://buttondown.com/changelog/2024-08-22

http://embratel.net.br

External failure to verify 1 referring page
Unknown Timeout

Found on

  • https://buttondown.com/blog/brazil-fermilab-email

http://yourdomain.com

External failure to verify 1 referring page
Unknown Connection failed

Found on

  • https://buttondown.com/blog/deliverability-personal-domain

https://8faces.com/

External failure to verify 1 referring page
Unknown Timeout

Found on

  • https://buttondown.com/blog/elliot-jay-stocks

https://forum.author.email/

External failure to verify 1 referring page
Unknown Connection failed

Found on

  • https://buttondown.com/alternatives/author-email

https://www.brendanschlagel.com/

External failure to verify 1 referring page
Unknown Connection failed

Found on

  • https://buttondown.com/kudos

https://www.catb.org/jargon/html/C/creeping-featurism.html

External failure to verify 1 referring page
Unknown Connection failed

Found on

  • https://buttondown.com/blog/devrel-vs-marketing

https://www.slac.stanford.edu/cgi-bin/getdoc/slac-pub-3705.pdf

External failure to verify 1 referring page
Unknown Connection failed

Found on

  • https://buttondown.com/blog/brazil-fermilab-email

https://bsky.app/profile/jmduke.com/post/3ls5q53pbak2f

External failure to verify 1 referring page
404 HTTP 404

Found on

  • https://buttondown.com/blog/2025-06-21

https://jmduke.com/2019/03/25/solvable-problems-in-a-mid-stage-side-project

External failure to verify 1 referring page
404 HTTP 404

Found on

  • https://buttondown.com/blog/april-updates-2

https://jmduke.com/2019/04/07/buttondown-s-anti-roadmap

External failure to verify 1 referring page
404 HTTP 404

Found on

  • https://buttondown.com/blog/april-updates-2

https://robhope.com/blog/eml-nd

External failure to verify 1 referring page
404 HTTP 404

Found on

  • https://buttondown.com/blog/blog-vs-newsletter

https://twitter.com/justinmduke/status/820761156964843520

External failure to verify 1 referring page
404 HTTP 404

Found on

  • https://buttondown.com/blog/2017-in-review

https://twitter.com/justinmduke/status/827663184274132992

External failure to verify 1 referring page
404 HTTP 404

Found on

  • https://buttondown.com/blog/2017-in-review

https://www.destinytoro.com/join-boriken-mail-club!

External failure to verify 1 referring page
404 HTTP 404

Found on

  • https://buttondown.com/blog/destiny-toro

https://www.destinytoro.com/shop

External failure to verify 1 referring page
404 HTTP 404

Found on

  • https://buttondown.com/blog/destiny-toro

https://x.com/dannypostmaa/status/1810864175503339774

External failure to verify 1 referring page
404 HTTP 404

Found on

  • https://buttondown.com/kudos
Crawl details and limitations
Crawl statusPage limit reached
Discovery methodspider
Crawl duration864.4 seconds
Pages failed35
Internal links found35400
External links found10272

Warnings

  • 35 pages failed to load
  • Found 38 broken links
  • 7 pages were blocked by robots.txt
  • 6 non-HTML URLs were skipped
  • Checked first 500 internal links (free tool limit)
  • 1809 internal links were discovered but not checked within the free tool limit
  • Check took longer than expected - site may be slow
  • Validated first 500 external links (free tool limit)
  • Limited to first 1500 pages (free tool limit)

Transparency notes

  • The free scan reached the 1,500 page limit.
  • The free scan reached the 500 external link check limit.
  • The free scan reached the 500 internal link check limit.
  • 800 sitemap URLs were found.
  • 7 pages were blocked by robots.txt.
  • 6 non HTML URLs were skipped.
  • 3 pages had request errors.
  • 1809 internal links were found but not checked in this free scan.

Cached report window ends 8/26/2026.