Cold Email Toolkit by ROI Maximizer
Free cold email checks that run in your browser, no signup
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Read the full description
Four free tools for anyone sending cold email. Grade a domain's MX, SPF, DMARC and DKIM. Flag job-changers in a lead list. Size inboxes and domains for a sequence. Cost a per-meeting quote. No signup. Three run entirely in your browser.
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PH · launched Oct 28, 2026 · 2 upvotes (top 23%)
- Sales
- Workflow automation
- B2B
- Not AI
- Commercial product
- Sales
- Email Marketing
Similar launches
See all 293 similar launches →Could you build this?
Partial DNS record checks and inbox sizing are easy to vibe-code, but flagging job changers in a lead list depends on a proprietary people and employment dataset that a builder would not have.
What it would actually take: The DNS checks use standard resolver lookups for MX, SPF, DMARC, and DKIM, and the calculators are simple browser logic. The job-changer feature needs a large, current dataset of professional profiles and job-change events, which requires licensed data providers or costly scraping and compliance work. Without that data source the lead-flagging feature cannot be reproduced.
Competitors
Other products that read as similar to this one : 293 launches clear the similarity bar, closest 8 shown.
Attention rank: #41 of 294 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 362 days after the earliest competitor.
- OutboundAuth · ph · 2026-10-01 · 1 upvotes · similarity 0.64
- SenderCheck · ph · 2026-10-06 · 1 upvotes · similarity 0.61
- LayerCall Free Email-DNS Tools · ph · 2026-09-06 · 1 upvotes · similarity 0.59
- Reloop Temp Email Checker · ph · 2026-09-24 · 11 upvotes · similarity 0.58
- Mail Health Report · ph · 2026-10-17 · 1 upvotes · similarity 0.57
- MailSenpai DNS Check · ph · 2026-10-13 · 1 upvotes · similarity 0.57
- Xpoudy · ph · 2026-10-04 · 1 upvotes · similarity 0.55
- SPF & DMARC Checker · ph · 2026-10-18 · 1 upvotes · similarity 0.53
Other launches for this product
- No other launches for this product.