You asked about Email
Nobody in the register described anything this way.
| Launched | What it was | Today |
|---|---|---|
| 2021-06-01 | YCMailmodo No-code email marketing platform to send forms & widgets within emails · mailmodo.com | acquired |
| 2020-06-01 | YCWarmly, [Acquired by HubSpot in 2026] Autonomous sales platform to auto-email… · warmly.ai | acquired |
| 2011-01-01 | YCMailgun Email API service. · mailgun.net | acquired |
| 2008-06-01 | Dead simple blogs by email · posterous.com | acquired |
| 2014-06-01 | PersistIQ is a free email automation platform to send a small batch… · persistiq.com | acquired |
| 2016-06-01 | YCPolymail Email productivity platform for business. · polymail.io | acquired |
| 2012-06-01 | Easy mailing lists · zeromailer.com | acquired |
| 2010-06-01 | Add profiles to email. · rapportive.com | acquired |
| 2015-01-01 | YCOutbound Create automated messages -- email, iOS/Android push, SMS and web… · outbound.io | acquired |
| 2009-01-01 | YCreMail Email search for iPhone. Acquired by Google in Feb 2010. · remail.com | acquired |
How this compares
The register re-probes every domain it holds. Some that answered last month stop answering. We send that list — what went quiet, and what it was — once a month. Nothing else.
How this was made. Show HN entries are every post from 2021 to 2023 with at least five points that linked to its own domain; code hosts and free hosting are excluded, because a repository outlives the effort behind it. Product Hunt entries needed 100 votes — a far higher bar, so they are the promoted top slice rather than a like-for-like sample. Both are judged by asking the domain whether it still answers: gone means it no longer resolves, refuses the connection, serves a parking page, or says plainly that it shut down. An HTTP error is not counted as gone — a server answering 404 is one somebody still pays for, and an audit of 25 gone-calls found two such sites alive with only a moved homepage. Y Combinator entries use the status YC publishes itself, which is why only those can say acquired. Squatted domains — a lapsed name now serving somebody else's site — are not detected, so these figures run slightly low.