About NewsletterOS

NewsletterOS is an AI-native email newsletter platform for creators and small businesses. It pairs a rich-text campaign editor with a BullMQ-driven worker that generates subject lines, drafts full newsletters from a prompt, optimizes send times, and runs drip sequences. Real-time analytics, A/B subject-line testing, mobile and desktop preview, and Stripe billing round out the product. Postgres (forge-control) holds the data and Better Auth handles sign-in; Resend (via service-email) powers delivery, with MailStackOS selectable. i18n ships in English, Spanish, French, and German.

Features

Messaging & notifications

AI-native email newsletter composer
Rich-text editor with templates and media
Show all 7 features

Business Gold

$24/mo

Complete business operations suite: accounting, contracts, proposals, leads, newsletters.

LedgerFlow unlimited invoices and VAT filing
Inkly e-signatures and templates
QuoteForge client-facing proposals
FunnelFox CRM and pipeline management
Letterly unlimited subscribers

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