IsDisposable
Open-source disposable email detection (160K+ domains)
Details
- External ID
- 47571804
- Source
- HN
- Company
- —
- Product
- IsDisposable
- Website domain
- npmjs.com
- Launched
- March 30, 2026
- Cohort
- —
- Upvotes
- 5
- Upvotes percentile
- 0.1070110701107011
- Tags
- —
- Fetched at
- Sept. 7, 2026, 9:26 p.m.
- Updated at
- Sept. 7, 2026, 9:26 p.m.
Enrichment
- Theme
- alternative social platforms and feed readers
- Vertical
- Security
- Function
- Dev tools
- Audience
- Developer
- AI stance
- Not AI
- Project type
- Hobby / open-source project
- Normalized one-liner
- disposable email detection for developers
- Manually corrected
- False
Could you build this?
Yes It is a straightforward lookup API or static library checking domain names against an aggregated blocklist of disposable email services.
Discussion
3 comments analyzed.
Competitors mentioned: Guerrilla Mail, 10MinuteMail
Concerns raised: Disposable email detection may not be reliable long-term as services rotate domains, High compute and AI credit costs (~$0.50 per signup)
Competitors
Other products that read as similar to this one — 457 launches clear the similarity bar, closest 8 shown.
Attention rank: #402 of 458 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).
Launched 143 days after the earliest competitor.
- Throwaway · hn · 2026-04-30 · 14 upvotes · similarity 0.63
- Hello Inbox · hn · 2026-06-04 · 5 upvotes · similarity 0.54
- XListman · hn · 2026-08-21 · 6 upvotes · similarity 0.51
- A Free RSS reader with a configurable recommendation engine · hn · 2026-07-14 · 16 upvotes · similarity 0.50
- I built an open-source email builder, alternative to Beefree/Unlayer · hn · 2026-05-06 · 169 upvotes · similarity 0.50
- React Email 6.0 · hn · 2026-04-17 · 10 upvotes · similarity 0.49
- Mocke, Cold Email AI Agent · yc · 2026-03-02 · 6 upvotes · similarity 0.49
- Mocke, Cold Email AI Agent · yc · 2026-02-27 · 6 upvotes · similarity 0.49
Other launches for this product
- No other launches for this product.
Same idea, different domain
Nobody's really built a dev tools tool for Sales yet.