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QuietMail

AI anti-spam & prompt-injection defense

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This is 1 of 143 launches in ai email assistants and agent platforms — see how it stacks up on momentum and crowding →

218 other launches read as similar to this one →

Details

External ID
1261772
Source
PH
Company
—
Product
Quietfail
Website domain
producthunt.com
Launched
Oct. 6, 2026
Cohort
—
Upvotes
2
Upvotes percentile
0.7630403573137662
Tags
Email, Privacy, Artificial Intelligence
Fetched at
Oct. 7, 2026, 1:01 a.m.
Updated at
Oct. 7, 2026, 1:01 a.m.

Description

QuietMail is the AI-powered anti-spam for Gmail, Outlook, Zoho Mail and JMAP. It checks every new message against your own rules, silences newsletters, promotions and notifications, recovers miss-flagged mail from Spam, and only deterministic code ever touches your mailbox. It can also protect you from prompt-injections and is free for one inbox (limits apply).

Enrichment

Niche
ai email assistants and agent platforms
Vertical
Security
Function
Workflow automation
Audience
B2B
AI stance
AI-native
Project type
Commercial product
Normalized one-liner
email spam and prompt injection defense for ai systems
Manually corrected
False

Could you build this?

Partial Standard email categorization via LLM APIs is simple, but reliable prompt injection defense and secure production integrations across multiple email protocols (OAuth, JMAP, IMAP) at mail volume require robust security engineering.

What it would actually take: The system requires multi-tenant OAuth sync engines for Google, Microsoft, and JMAP with webhook-based push notifications (Gmail Pub/Sub, Graph webhooks). The core classification pipeline requires deterministic parsing combined with an adversarial-robust LLM classifier that sanitizes untrusted payload inputs to prevent prompt injection, backed by low-latency serverless queues (e.g., SQS/Lambda).

Competitors

Other products that read as similar to this one — 218 launches clear the similarity bar, closest 8 shown.

Attention rank: #49 of 219 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).

Launched 333 days after the earliest competitor.

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