mailX by mailwarm - Instant deliverability diagnostics for AI agents & humans.
mailX tells you why emails go to spam and how to fix it, via web, API, and MCP.
Details
- External ID
- 101509
- Source
- YC
- Company
- Mailwarm
- Product
- mailX by mailwarm - Instant deliverability diagnostics for AI agents & humans.
- Website domain
- mailwarm.com
- Launched
- May 18, 2026
- Cohort
- Summer 2020
- Upvotes
- 35
- Upvotes percentile
- 0.753731343283582
- Tags
- SaaS, B2B, Marketing, Email
- Fetched at
- Sept. 30, 2026, 5 p.m.
- Updated at
- Sept. 30, 2026, 5 p.m.
Enrichment
- Theme
- AI email agents and deliverability
- Vertical
- Horizontal
- Function
- Observability & eval
- Audience
- B2B
- AI stance
- AI feature
- Project type
- Commercial product
- Normalized one-liner
- email deliverability diagnostics for agents and users
- Manually corrected
- False
Could you build this?
Yes Deliverability diagnostics involve analyzing SPF, DKIM, DMARC, IP blacklists, and email headers via standard DNS checks and SMTP probing, exposed through an API and UI.
Competitors
Other products that read as similar to this one — 83 launches clear the similarity bar, closest 8 shown.
Attention rank: #20 of 84 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).
Launched 192 days after the earliest competitor.
- mailX by mailwarm · ph · 2026-05-20 · 597 upvotes · similarity 0.87
- Mailwarm 2.0 · ph · 2026-06-04 · 680 upvotes · similarity 0.63
- MailAdept by mailwarm · ph · 2026-07-01 · 287 upvotes · similarity 0.56
- EmailWarmup · ph · 2026-09-15 · 1 upvotes · similarity 0.53
- Atomic Mail Agentic · ph · 2026-06-21 · 268 upvotes · similarity 0.46
- Deliveryman.ai · ph · 2026-06-04 · 186 upvotes · similarity 0.44
- AgentMail · ph · 2026-04-09 · 274 upvotes · similarity 0.43
- MailWarmupPro · ph · 2026-09-19 · 2 upvotes · similarity 0.42
Other launches for this product
- No other launches for this product.
Same idea, different domain
Nobody's really built a observability & eval tool for Media & entertainment yet.