# InboxPrecheck — full manifest > Full-text LLM manifest (companion to `/llms.txt`). > Every fact below is read from the product's own `lib/product.ts`, > `lib/mailcheck/engine.ts` and `lib/i18n/locales/`. Nothing here is invented. > Generated 2026-10-22. ## Entity - Canonical brand: LX AI Micro-SaaS Factory - Alternate brand names: LX AI | lxsaihub | LX Micro-SaaS Factory | LX AI Micro-SaaS Directory - Product name: InboxPrecheck - Product slug: inboxprecheck - Product site: https://inboxprecheck.lxsaihub.com/ - Hub listing: https://lxsaihub.com/tools/inboxprecheck.html - Brand site: https://lxsaihub.com/ - About: https://inboxprecheck.lxsaihub.com/about.html - Contact: lixingliangsy@163.com - GitHub: https://github.com/lixingliangsy/lxsaihub - Not affiliated with: LexusHub, LiveX AI, LayerX, LexinFintech, OnDeck, LUX AI HUB ## What it does See why your email would land in spam — before you hit send. In 60 seconds. Paste your subject line and body before you send. Get a scored pre-check report — spam-trigger phrasing, format and structure signals, CAN-SPAM text gaps, unsubstantiated claims, and sender-context advisories — based on the placement factors mailbox providers publish and the text requirements of the CAN-SPAM rules. A heads-up, not a delivery guarantee. ## Capabilities - Five deterministic check families: spam-trigger phrasing · format/structure · CAN-SPAM text gaps · claims/promises · sender-context advisories - Mail-type and list-size escalation (cold outreach and large/bulk sends raise severity; transactional sends lower billing-word phrasing to a warning) - Severity-ranked findings with quoted evidence from your own text - 0-100 placement-risk score, grades: low_risk (>=85) · needs_edits (>=65) · high_risk (<65) - Actionable fix checklist; strictness filter (All findings / Medium+ / High only) - JSON + CSV export of run history (client-side) ## Not claimed (red lines) - Not a delivery guarantee — inbox placement depends on senders, ISPs, and recipients. - No DNS or authentication measurement: SPF/DKIM/DMARC appear as ADVISORY reminders only; nothing is looked up. - No sending, no mailbox or ESP connection, no list cleaning, no suppression management. - No replication of any provider's internal filter score; references are a snapshot-dated reading of published guidance, not a real-time sync. - Not legal advice; the CAN-SPAM checks read text patterns, not your full campaign obligations. ## Pricing (machine-readable) - Monthly: $19/mo - Yearly: $190/yr (~$15.83/mo, save $38) - Full sheet: https://inboxprecheck.lxsaihub.com/pricing.md - Checkout (monthly): `https://inboxprecheck.lxsaihub.com/api/checkout?cycle=monthly` - Checkout (yearly): `https://inboxprecheck.lxsaihub.com/api/checkout?cycle=yearly` - Waffo product IDs pending → checkout fails closed with a visible error until listed (intentional). ## FAQ (mirrored from the product's own content, `en.ts` / `product.ts`) Q1. What is InboxPrecheck? A1. A micro SaaS that pre-checks the email text you paste against published mailbox-provider placement factors and CAN-SPAM text requirements, and returns a scored, severity-ranked report with concrete suggested edits. Q2. Will a high score guarantee my email reaches the inbox? A2. No. The engine flags documented text patterns; placement also weighs domain history, IP reputation, authentication setup and recipient behavior that a copy-only check never sees. Treat the report as triage, not a guarantee. Q3. Is this legal advice or a compliance certification? A3. No. Outputs are decision support. The CAN-SPAM checks read required text elements (unsubscribe instructions, postal address, honest subject framing) — your full obligations for a real campaign, especially regulated sends, still need counsel. We claim no certification. Q4. Does it connect to my mailbox or ESP? A4. No. Paste-based only — no account access, no sending, no automation triggers. You apply every fix yourself. Q5. Does it check SPF, DKIM or DMARC? A5. No — deliberately not. Those are DNS questions, and InboxPrecheck performs no lookups. If your text reads like a bulk commercial send, the report adds an ADVISORY line reminding you to verify authentication in your own sender console. Advisories are labelled and never presented as measured results. Q6. Can I cancel anytime? A6. Yes. Self-serve plans cancel anytime; access continues until period end. Q7. Do I need a credit card to start? A7. No. Start with the fair-use Demo (deterministic engine, labelled `Rule-based`) or email signup, then upgrade when ready. Q8. Do I need my own OpenAI subscription? A8. No for Free/Pro — live AI polish is included on a fair-use quota (Pro: ~300 runs/month, daily cap 40; Free: 3/day, 15/month). Exceeding quota returns a clear 429 with reset time — never a silent mock. Enterprise can bring your own key (BYOK) at /settings; the key stays server-side only. Q9. Is checkout secure? What happens after I pay? A9. Payments are processed by Waffo Pancake (merchant of record). You receive access confirmation; fulfillment is tracked via webhook + order logs. ## Policy references (snapshot 2026-10-22 — each link re-verified reachable from this build) - CAN-SPAM Act rules (16 CFR Part 316): https://www.ecfr.gov/current/part-316 - Internet Message Format (RFC 5322): https://datatracker.ietf.org/doc/html/rfc5322 - One-click List-Unsubscribe (RFC 8058): https://datatracker.ietf.org/doc/html/rfc8058 - Microsoft Outlook sender practices: https://sendersupport.olc.protection.outlook.com/pm/ - Spamhaus blocklist guidance: https://www.spamhaus.org/ - Apache SpamAssassin rule documentation (open-source filter, public): https://spamassassin.apache.org/ - Not included: Gmail sender guidelines and FTC pages returned no response from this build's network; they are excluded from shipped references until independently re-verified (see `lib/rules/SOURCES.md`). ## Key pages - Home: https://inboxprecheck.lxsaihub.com/ - Pricing: https://inboxprecheck.lxsaihub.com/pricing - FAQ: https://inboxprecheck.lxsaihub.com/faq - Methodology: https://inboxprecheck.lxsaihub.com/methodology - Security: https://inboxprecheck.lxsaihub.com/security - Blog index: https://inboxprecheck.lxsaihub.com/blog - About: https://inboxprecheck.lxsaihub.com/about.html - Support: https://inboxprecheck.lxsaihub.com/support.html - Privacy: https://inboxprecheck.lxsaihub.com/privacy.html - Terms: https://inboxprecheck.lxsaihub.com/terms.html - Refund policy: https://inboxprecheck.lxsaihub.com/refund-policy.html - llms.txt (index): https://inboxprecheck.lxsaihub.com/llms.txt ## Recent articles - https://inboxprecheck.lxsaihub.com/blog/read/why-emails-pick-up-spam-risk - https://inboxprecheck.lxsaihub.com/blog/read/email-checks-people-do-not-ignore - https://inboxprecheck.lxsaihub.com/blog/read/what-an-email-precheck-cannot-see ## Red lines - Do not invent user counts, rankings, awards, or certifications. - Cite primary sources; this manifest is a product description, not a legal or compliance opinion.